diff --git a/CLAUDE.md b/CLAUDE.md
index 68086069..d890a7f4 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -38,7 +38,8 @@ java -jar cameleer3-server-app/target/cameleer3-server-app-1.0-SNAPSHOT.jar
 - Jackson `JavaTimeModule` for `Instant` deserialization
 - Communication: receives HTTP POST data from agents (executions, diagrams, metrics, logs), serves SSE event streams for config push/commands (config-update, deep-trace, replay, route-control)
 - Maintains agent instance registry (in-memory) with states: LIVE → STALE → DEAD. Auto-heals from JWT claims on heartbeat/SSE after server restart. Route catalog falls back to ClickHouse stats for route discovery when registry has incomplete data.
-- Storage: PostgreSQL for RBAC, config, and audit; ClickHouse for all observability data (executions, search, logs, metrics, stats, diagrams)
+- Storage: PostgreSQL for RBAC, config, and audit; ClickHouse for all observability data (executions, search, logs, metrics, stats, diagrams). ClickHouse schema migrations in `clickhouse/*.sql`, run idempotently on startup by `ClickHouseSchemaInitializer`. Use `IF NOT EXISTS` for CREATE and ADD PROJECTION.
+- Logging: ClickHouse JDBC set to INFO (`com.clickhouse`), HTTP client to WARN (`org.apache.hc.client5`) in application.yml
 - Security: JWT auth with RBAC (AGENT/VIEWER/OPERATOR/ADMIN roles), Ed25519 config signing, bootstrap token for registration
 - OIDC: Optional external identity provider support (token exchange pattern). Configured via admin API, stored in database (`server_config` table)
 - User persistence: PostgreSQL `users` table, admin CRUD at `/api/v1/admin/users`
diff --git a/cameleer3-server-app/src/main/java/com/cameleer3/server/app/config/ClickHouseSchemaInitializer.java b/cameleer3-server-app/src/main/java/com/cameleer3/server/app/config/ClickHouseSchemaInitializer.java
index f8783ee2..20174316 100644
--- a/cameleer3-server-app/src/main/java/com/cameleer3/server/app/config/ClickHouseSchemaInitializer.java
+++ b/cameleer3-server-app/src/main/java/com/cameleer3/server/app/config/ClickHouseSchemaInitializer.java
@@ -11,10 +11,7 @@ import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
 import org.springframework.jdbc.core.JdbcTemplate;
 import org.springframework.stereotype.Component;
 
-import java.io.IOException;
 import java.nio.charset.StandardCharsets;
-import java.util.Arrays;
-import java.util.Comparator;
 
 @Component
 @ConditionalOnProperty(name = "clickhouse.enabled", havingValue = "true")
@@ -33,38 +30,24 @@ public class ClickHouseSchemaInitializer {
     public void initializeSchema() {
         try {
             PathMatchingResourcePatternResolver resolver = new PathMatchingResourcePatternResolver();
-            Resource[] scripts = resolver.getResources("classpath:clickhouse/*.sql");
+            Resource script = resolver.getResource("classpath:clickhouse/init.sql");
 
-            // Sort by numeric version prefix (V1, V2, ..., V10, V11) — not alphabetically
-            Arrays.sort(scripts, Comparator.comparingInt(r -> {
-                String name = r.getFilename();
-                if (name != null && name.startsWith("V")) {
-                    int end = name.indexOf('_');
-                    if (end > 1) {
-                        try { return Integer.parseInt(name.substring(1, end)); } catch (NumberFormatException ignored) {}
-                    }
-                }
-                return Integer.MAX_VALUE;
-            }));
-
-            for (Resource script : scripts) {
-                String sql = script.getContentAsString(StandardCharsets.UTF_8);
-                log.info("Executing ClickHouse schema script: {}", script.getFilename());
-                for (String statement : sql.split(";")) {
-                    String trimmed = statement.trim();
-                    // Skip empty segments and comment-only segments
-                    String withoutComments = trimmed.lines()
-                            .filter(line -> !line.stripLeading().startsWith("--"))
-                            .map(String::trim)
-                            .filter(line -> !line.isEmpty())
-                            .reduce("", (a, b) -> a + b);
-                    if (!withoutComments.isEmpty()) {
-                        clickHouseJdbc.execute(trimmed);
-                    }
+            String sql = script.getContentAsString(StandardCharsets.UTF_8);
+            log.info("Executing ClickHouse schema: {}", script.getFilename());
+            for (String statement : sql.split(";")) {
+                String trimmed = statement.trim();
+                // Skip empty segments and comment-only segments
+                String withoutComments = trimmed.lines()
+                        .filter(line -> !line.stripLeading().startsWith("--"))
+                        .map(String::trim)
+                        .filter(line -> !line.isEmpty())
+                        .reduce("", (a, b) -> a + b);
+                if (!withoutComments.isEmpty()) {
+                    clickHouseJdbc.execute(trimmed);
                 }
             }
 
-            log.info("ClickHouse schema initialization complete ({} scripts)", scripts.length);
+            log.info("ClickHouse schema initialization complete");
         } catch (Exception e) {
             log.error("ClickHouse schema initialization failed — server will continue but ClickHouse features may not work", e);
         }
diff --git a/cameleer3-server-app/src/main/java/com/cameleer3/server/app/storage/ClickHouseDiagramStore.java b/cameleer3-server-app/src/main/java/com/cameleer3/server/app/storage/ClickHouseDiagramStore.java
index 2153cc8d..97c47dad 100644
--- a/cameleer3-server-app/src/main/java/com/cameleer3/server/app/storage/ClickHouseDiagramStore.java
+++ b/cameleer3-server-app/src/main/java/com/cameleer3/server/app/storage/ClickHouseDiagramStore.java
@@ -23,6 +23,7 @@ import java.util.HexFormat;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
+import java.util.concurrent.ConcurrentHashMap;
 
 /**
  * ClickHouse implementation of {@link DiagramStore}.
@@ -30,9 +31,9 @@ import java.util.Optional;
  * Stores route graphs as JSON with SHA-256 content-hash deduplication.
  * Uses ReplacingMergeTree — duplicate inserts are deduplicated on merge.
  * <p>
- * {@code findProcessorRouteMapping} fetches all definitions for the application
- * and deserializes them in Java because ClickHouse has no equivalent of
- * PostgreSQL's {@code jsonb_array_elements()}.
+ * In-memory caches avoid expensive ClickHouse scans for the hot lookup paths
+ * (route+instance → hash, hash → graph). Diagrams change rarely (only on
+ * route topology changes), so the caches are effectively append-only.
  */
 public class ClickHouseDiagramStore implements DiagramStore {
 
@@ -66,10 +67,35 @@ public class ClickHouseDiagramStore implements DiagramStore {
     private final JdbcTemplate jdbc;
     private final ObjectMapper objectMapper;
 
+    // (routeId + "\0" + instanceId) → contentHash
+    private final ConcurrentHashMap<String, String> hashCache = new ConcurrentHashMap<>();
+    // contentHash → deserialized RouteGraph
+    private final ConcurrentHashMap<String, RouteGraph> graphCache = new ConcurrentHashMap<>();
+
     public ClickHouseDiagramStore(JdbcTemplate jdbc) {
         this.jdbc = jdbc;
         this.objectMapper = new ObjectMapper();
         this.objectMapper.registerModule(new JavaTimeModule());
+        warmLoadHashCache();
+    }
+
+    private void warmLoadHashCache() {
+        try {
+            jdbc.query(
+                    "SELECT route_id, instance_id, content_hash FROM route_diagrams WHERE tenant_id = ?",
+                    rs -> {
+                        String key = rs.getString("route_id") + "\0" + rs.getString("instance_id");
+                        hashCache.put(key, rs.getString("content_hash"));
+                    },
+                    TENANT);
+            log.info("Diagram hash cache warmed: {} entries", hashCache.size());
+        } catch (Exception e) {
+            log.warn("Failed to warm diagram hash cache — lookups will fall back to ClickHouse: {}", e.getMessage());
+        }
+    }
+
+    private static String cacheKey(String routeId, String instanceId) {
+        return routeId + "\0" + instanceId;
     }
 
     @Override
@@ -90,6 +116,11 @@ public class ClickHouseDiagramStore implements DiagramStore {
                     applicationId,
                     json,
                     Timestamp.from(Instant.now()));
+
+            // Update caches
+            hashCache.put(cacheKey(routeId, agentId), contentHash);
+            graphCache.put(contentHash, graph);
+
             log.debug("Stored diagram for route={} agent={} with hash={}", routeId, agentId, contentHash);
         } catch (JsonProcessingException e) {
             throw new RuntimeException("Failed to serialize RouteGraph to JSON", e);
@@ -98,13 +129,20 @@ public class ClickHouseDiagramStore implements DiagramStore {
 
     @Override
     public Optional<RouteGraph> findByContentHash(String contentHash) {
+        RouteGraph cached = graphCache.get(contentHash);
+        if (cached != null) {
+            return Optional.of(cached);
+        }
+
         List<Map<String, Object>> rows = jdbc.queryForList(SELECT_BY_HASH, TENANT, contentHash);
         if (rows.isEmpty()) {
             return Optional.empty();
         }
         String json = (String) rows.get(0).get("definition");
         try {
-            return Optional.of(objectMapper.readValue(json, RouteGraph.class));
+            RouteGraph graph = objectMapper.readValue(json, RouteGraph.class);
+            graphCache.put(contentHash, graph);
+            return Optional.of(graph);
         } catch (JsonProcessingException e) {
             log.error("Failed to deserialize RouteGraph from ClickHouse", e);
             return Optional.empty();
@@ -113,12 +151,19 @@ public class ClickHouseDiagramStore implements DiagramStore {
 
     @Override
     public Optional<String> findContentHashForRoute(String routeId, String agentId) {
+        String cached = hashCache.get(cacheKey(routeId, agentId));
+        if (cached != null) {
+            return Optional.of(cached);
+        }
+
         List<Map<String, Object>> rows = jdbc.queryForList(
                 SELECT_HASH_FOR_ROUTE, TENANT, routeId, agentId);
         if (rows.isEmpty()) {
             return Optional.empty();
         }
-        return Optional.of((String) rows.get(0).get("content_hash"));
+        String hash = (String) rows.get(0).get("content_hash");
+        hashCache.put(cacheKey(routeId, agentId), hash);
+        return Optional.of(hash);
     }
 
     @Override
@@ -126,6 +171,16 @@ public class ClickHouseDiagramStore implements DiagramStore {
         if (agentIds == null || agentIds.isEmpty()) {
             return Optional.empty();
         }
+
+        // Try cache first — return first hit
+        for (String agentId : agentIds) {
+            String cached = hashCache.get(cacheKey(routeId, agentId));
+            if (cached != null) {
+                return Optional.of(cached);
+            }
+        }
+
+        // Fall back to ClickHouse
         String placeholders = String.join(", ", Collections.nCopies(agentIds.size(), "?"));
         String sql = "SELECT content_hash FROM route_diagrams " +
                 "WHERE tenant_id = ? AND route_id = ? AND instance_id IN (" + placeholders + ") " +
@@ -162,9 +217,6 @@ public class ClickHouseDiagramStore implements DiagramStore {
         return mapping;
     }
 
-    /**
-     * Recursively walks the RouteNode tree and maps each node ID to the given routeId.
-     */
     private void collectNodeIds(RouteNode node, String routeId, Map<String, String> mapping) {
         if (node == null) {
             return;
diff --git a/cameleer3-server-app/src/main/resources/clickhouse/V10__usage_events.sql b/cameleer3-server-app/src/main/resources/clickhouse/V10__usage_events.sql
deleted file mode 100644
index 561f84fb..00000000
--- a/cameleer3-server-app/src/main/resources/clickhouse/V10__usage_events.sql
+++ /dev/null
@@ -1,13 +0,0 @@
-CREATE TABLE IF NOT EXISTS usage_events (
-    timestamp    DateTime64(3) DEFAULT now64(3),
-    username     LowCardinality(String),
-    method       LowCardinality(String),
-    path         String,
-    normalized   LowCardinality(String),
-    status_code  UInt16,
-    duration_ms  UInt32,
-    query_params String DEFAULT ''
-)
-ENGINE = MergeTree()
-ORDER BY (username, timestamp)
-TTL toDateTime(timestamp) + INTERVAL 90 DAY;
diff --git a/cameleer3-server-app/src/main/resources/clickhouse/V11__route_diagrams_projection.sql b/cameleer3-server-app/src/main/resources/clickhouse/V11__route_diagrams_projection.sql
deleted file mode 100644
index 18d57a65..00000000
--- a/cameleer3-server-app/src/main/resources/clickhouse/V11__route_diagrams_projection.sql
+++ /dev/null
@@ -1,11 +0,0 @@
--- Projection for fast route_id + instance_id lookups on route_diagrams.
--- The primary key is (tenant_id, content_hash) which serves hash-based lookups.
--- Queries filtering by route_id + instance_id were scanning millions of rows.
--- ReplacingMergeTree requires deduplicate_merge_projection_mode to be set (ClickHouse 24.12+).
-ALTER TABLE route_diagrams MODIFY SETTING deduplicate_merge_projection_mode = 'drop';
-
-ALTER TABLE route_diagrams
-    ADD PROJECTION IF NOT EXISTS prj_route_instance
-    (SELECT content_hash, created_at ORDER BY tenant_id, route_id, instance_id, created_at);
-
-ALTER TABLE route_diagrams MATERIALIZE PROJECTION IF NOT EXISTS prj_route_instance
diff --git a/cameleer3-server-app/src/main/resources/clickhouse/V1__agent_metrics.sql b/cameleer3-server-app/src/main/resources/clickhouse/V1__agent_metrics.sql
deleted file mode 100644
index a809a3ba..00000000
--- a/cameleer3-server-app/src/main/resources/clickhouse/V1__agent_metrics.sql
+++ /dev/null
@@ -1,14 +0,0 @@
-CREATE TABLE IF NOT EXISTS agent_metrics (
-    tenant_id          LowCardinality(String) DEFAULT 'default',
-    collected_at       DateTime64(3),
-    instance_id        LowCardinality(String),
-    metric_name        LowCardinality(String),
-    metric_value       Float64,
-    tags               Map(String, String) DEFAULT map(),
-    server_received_at DateTime64(3) DEFAULT now64(3)
-)
-ENGINE = MergeTree()
-PARTITION BY (tenant_id, toYYYYMM(collected_at))
-ORDER BY (tenant_id, instance_id, metric_name, collected_at)
-TTL toDateTime(collected_at) + INTERVAL 365 DAY DELETE
-SETTINGS index_granularity = 8192;
diff --git a/cameleer3-server-app/src/main/resources/clickhouse/V2__executions.sql b/cameleer3-server-app/src/main/resources/clickhouse/V2__executions.sql
deleted file mode 100644
index d9250c8a..00000000
--- a/cameleer3-server-app/src/main/resources/clickhouse/V2__executions.sql
+++ /dev/null
@@ -1,49 +0,0 @@
-CREATE TABLE IF NOT EXISTS executions (
-    tenant_id            LowCardinality(String) DEFAULT 'default',
-    execution_id         String,
-    start_time           DateTime64(3),
-    _version             UInt64 DEFAULT 1,
-    route_id             LowCardinality(String),
-    instance_id          LowCardinality(String),
-    application_id       LowCardinality(String),
-    status               LowCardinality(String),
-    correlation_id       String DEFAULT '',
-    exchange_id          String DEFAULT '',
-    end_time             Nullable(DateTime64(3)),
-    duration_ms          Nullable(Int64),
-    error_message        String DEFAULT '',
-    error_stacktrace     String DEFAULT '',
-    error_type           LowCardinality(String) DEFAULT '',
-    error_category       LowCardinality(String) DEFAULT '',
-    root_cause_type      String DEFAULT '',
-    root_cause_message   String DEFAULT '',
-    diagram_content_hash String DEFAULT '',
-    engine_level         LowCardinality(String) DEFAULT '',
-    input_body           String DEFAULT '',
-    output_body          String DEFAULT '',
-    input_headers        String DEFAULT '',
-    output_headers       String DEFAULT '',
-    attributes           String DEFAULT '',
-    trace_id             String DEFAULT '',
-    span_id              String DEFAULT '',
-    has_trace_data       Bool DEFAULT false,
-    is_replay            Bool DEFAULT false,
-
-    _search_text         String MATERIALIZED
-        concat(execution_id, ' ', correlation_id, ' ', exchange_id, ' ', route_id,
-               ' ', error_message, ' ', error_stacktrace, ' ', attributes,
-               ' ', input_body, ' ', output_body, ' ', input_headers,
-               ' ', output_headers, ' ', root_cause_message),
-
-    INDEX idx_search   _search_text TYPE ngrambf_v1(3, 256, 2, 0) GRANULARITY 4,
-    INDEX idx_error    error_message TYPE ngrambf_v1(3, 256, 2, 0) GRANULARITY 4,
-    INDEX idx_bodies   concat(input_body, ' ', output_body) TYPE ngrambf_v1(3, 256, 2, 0) GRANULARITY 4,
-    INDEX idx_headers  concat(input_headers, ' ', output_headers) TYPE ngrambf_v1(3, 256, 2, 0) GRANULARITY 4,
-    INDEX idx_status   status TYPE set(10) GRANULARITY 1,
-    INDEX idx_corr     correlation_id TYPE bloom_filter(0.01) GRANULARITY 4
-)
-ENGINE = ReplacingMergeTree(_version)
-PARTITION BY (tenant_id, toYYYYMM(start_time))
-ORDER BY (tenant_id, start_time, application_id, route_id, execution_id)
-TTL toDateTime(start_time) + INTERVAL 365 DAY DELETE
-SETTINGS index_granularity = 8192;
diff --git a/cameleer3-server-app/src/main/resources/clickhouse/V3__processor_executions.sql b/cameleer3-server-app/src/main/resources/clickhouse/V3__processor_executions.sql
deleted file mode 100644
index 3da0d586..00000000
--- a/cameleer3-server-app/src/main/resources/clickhouse/V3__processor_executions.sql
+++ /dev/null
@@ -1,45 +0,0 @@
-CREATE TABLE IF NOT EXISTS processor_executions (
-    tenant_id             LowCardinality(String) DEFAULT 'default',
-    execution_id          String,
-    seq                   UInt32,
-    parent_seq            Nullable(UInt32),
-    parent_processor_id   String DEFAULT '',
-    processor_id          String,
-    processor_type        LowCardinality(String),
-    start_time            DateTime64(3),
-    route_id              LowCardinality(String),
-    application_id        LowCardinality(String),
-    iteration             Nullable(Int32),
-    iteration_size        Nullable(Int32),
-    status                LowCardinality(String),
-    end_time              Nullable(DateTime64(3)),
-    duration_ms           Nullable(Int64),
-    error_message         String DEFAULT '',
-    error_stacktrace      String DEFAULT '',
-    error_type            LowCardinality(String) DEFAULT '',
-    error_category        LowCardinality(String) DEFAULT '',
-    root_cause_type       String DEFAULT '',
-    root_cause_message    String DEFAULT '',
-    input_body            String DEFAULT '',
-    output_body           String DEFAULT '',
-    input_headers         String DEFAULT '',
-    output_headers        String DEFAULT '',
-    attributes            String DEFAULT '',
-    resolved_endpoint_uri String DEFAULT '',
-    circuit_breaker_state LowCardinality(String) DEFAULT '',
-    fallback_triggered    Bool DEFAULT false,
-    filter_matched        Bool DEFAULT false,
-    duplicate_message     Bool DEFAULT false,
-
-    _search_text          String MATERIALIZED
-        concat(error_message, ' ', error_stacktrace, ' ', attributes,
-               ' ', input_body, ' ', output_body, ' ', input_headers, ' ', output_headers),
-
-    INDEX idx_search  _search_text TYPE ngrambf_v1(3, 256, 2, 0) GRANULARITY 4,
-    INDEX idx_exec_id execution_id TYPE bloom_filter(0.01) GRANULARITY 4
-)
-ENGINE = MergeTree()
-PARTITION BY (tenant_id, toYYYYMM(start_time))
-ORDER BY (tenant_id, start_time, application_id, route_id, execution_id, seq)
-TTL toDateTime(start_time) + INTERVAL 365 DAY DELETE
-SETTINGS index_granularity = 8192;
diff --git a/cameleer3-server-app/src/main/resources/clickhouse/V4__stats_tables_and_mvs.sql b/cameleer3-server-app/src/main/resources/clickhouse/V4__stats_tables_and_mvs.sql
deleted file mode 100644
index 1aa1a6f0..00000000
--- a/cameleer3-server-app/src/main/resources/clickhouse/V4__stats_tables_and_mvs.sql
+++ /dev/null
@@ -1,167 +0,0 @@
--- V4__stats_tables_and_mvs.sql
--- Pre-aggregated statistics tables and materialized views.
--- Tables use AggregatingMergeTree, MVs use -State combinators.
-
--- stats_1m_all (global)
-
-CREATE TABLE IF NOT EXISTS stats_1m_all (
-    tenant_id     LowCardinality(String),
-    bucket        DateTime,
-    total_count   AggregateFunction(count),
-    failed_count  AggregateFunction(countIf, UInt8),
-    running_count AggregateFunction(countIf, UInt8),
-    duration_sum  AggregateFunction(sum, Nullable(Int64)),
-    duration_max  AggregateFunction(max, Nullable(Int64)),
-    p99_duration  AggregateFunction(quantile(0.99), Nullable(Int64))
-)
-ENGINE = AggregatingMergeTree()
-PARTITION BY (tenant_id, toYYYYMM(bucket))
-ORDER BY (tenant_id, bucket)
-TTL bucket + INTERVAL 365 DAY DELETE;
-
-CREATE MATERIALIZED VIEW IF NOT EXISTS stats_1m_all_mv TO stats_1m_all AS
-SELECT
-    tenant_id,
-    toStartOfMinute(start_time)           AS bucket,
-    countState()                           AS total_count,
-    countIfState(status = 'FAILED')        AS failed_count,
-    countIfState(status = 'RUNNING')       AS running_count,
-    sumState(duration_ms)                  AS duration_sum,
-    maxState(duration_ms)                  AS duration_max,
-    quantileState(0.99)(duration_ms)       AS p99_duration
-FROM executions
-GROUP BY tenant_id, bucket;
-
--- stats_1m_app (per-application)
-
-CREATE TABLE IF NOT EXISTS stats_1m_app (
-    tenant_id        LowCardinality(String),
-    application_id LowCardinality(String),
-    bucket           DateTime,
-    total_count      AggregateFunction(count),
-    failed_count     AggregateFunction(countIf, UInt8),
-    running_count    AggregateFunction(countIf, UInt8),
-    duration_sum     AggregateFunction(sum, Nullable(Int64)),
-    duration_max     AggregateFunction(max, Nullable(Int64)),
-    p99_duration     AggregateFunction(quantile(0.99), Nullable(Int64))
-)
-ENGINE = AggregatingMergeTree()
-PARTITION BY (tenant_id, toYYYYMM(bucket))
-ORDER BY (tenant_id, application_id, bucket)
-TTL bucket + INTERVAL 365 DAY DELETE;
-
-CREATE MATERIALIZED VIEW IF NOT EXISTS stats_1m_app_mv TO stats_1m_app AS
-SELECT
-    tenant_id,
-    application_id,
-    toStartOfMinute(start_time)           AS bucket,
-    countState()                           AS total_count,
-    countIfState(status = 'FAILED')        AS failed_count,
-    countIfState(status = 'RUNNING')       AS running_count,
-    sumState(duration_ms)                  AS duration_sum,
-    maxState(duration_ms)                  AS duration_max,
-    quantileState(0.99)(duration_ms)       AS p99_duration
-FROM executions
-GROUP BY tenant_id, application_id, bucket;
-
--- stats_1m_route (per-route)
-
-CREATE TABLE IF NOT EXISTS stats_1m_route (
-    tenant_id        LowCardinality(String),
-    application_id LowCardinality(String),
-    route_id         LowCardinality(String),
-    bucket           DateTime,
-    total_count      AggregateFunction(count),
-    failed_count     AggregateFunction(countIf, UInt8),
-    running_count    AggregateFunction(countIf, UInt8),
-    duration_sum     AggregateFunction(sum, Nullable(Int64)),
-    duration_max     AggregateFunction(max, Nullable(Int64)),
-    p99_duration     AggregateFunction(quantile(0.99), Nullable(Int64))
-)
-ENGINE = AggregatingMergeTree()
-PARTITION BY (tenant_id, toYYYYMM(bucket))
-ORDER BY (tenant_id, application_id, route_id, bucket)
-TTL bucket + INTERVAL 365 DAY DELETE;
-
-CREATE MATERIALIZED VIEW IF NOT EXISTS stats_1m_route_mv TO stats_1m_route AS
-SELECT
-    tenant_id,
-    application_id,
-    route_id,
-    toStartOfMinute(start_time)           AS bucket,
-    countState()                           AS total_count,
-    countIfState(status = 'FAILED')        AS failed_count,
-    countIfState(status = 'RUNNING')       AS running_count,
-    sumState(duration_ms)                  AS duration_sum,
-    maxState(duration_ms)                  AS duration_max,
-    quantileState(0.99)(duration_ms)       AS p99_duration
-FROM executions
-GROUP BY tenant_id, application_id, route_id, bucket;
-
--- stats_1m_processor (per-processor-type)
-
-CREATE TABLE IF NOT EXISTS stats_1m_processor (
-    tenant_id        LowCardinality(String),
-    application_id LowCardinality(String),
-    processor_type   LowCardinality(String),
-    bucket           DateTime,
-    total_count      AggregateFunction(count),
-    failed_count     AggregateFunction(countIf, UInt8),
-    duration_sum     AggregateFunction(sum, Nullable(Int64)),
-    duration_max     AggregateFunction(max, Nullable(Int64)),
-    p99_duration     AggregateFunction(quantile(0.99), Nullable(Int64))
-)
-ENGINE = AggregatingMergeTree()
-PARTITION BY (tenant_id, toYYYYMM(bucket))
-ORDER BY (tenant_id, application_id, processor_type, bucket)
-TTL bucket + INTERVAL 365 DAY DELETE;
-
-CREATE MATERIALIZED VIEW IF NOT EXISTS stats_1m_processor_mv TO stats_1m_processor AS
-SELECT
-    tenant_id,
-    application_id,
-    processor_type,
-    toStartOfMinute(start_time)           AS bucket,
-    countState()                           AS total_count,
-    countIfState(status = 'FAILED')        AS failed_count,
-    sumState(duration_ms)                  AS duration_sum,
-    maxState(duration_ms)                  AS duration_max,
-    quantileState(0.99)(duration_ms)       AS p99_duration
-FROM processor_executions
-GROUP BY tenant_id, application_id, processor_type, bucket;
-
--- stats_1m_processor_detail (per-processor-id)
-
-CREATE TABLE IF NOT EXISTS stats_1m_processor_detail (
-    tenant_id        LowCardinality(String),
-    application_id LowCardinality(String),
-    route_id         LowCardinality(String),
-    processor_id     String,
-    processor_type   LowCardinality(String),
-    bucket           DateTime,
-    total_count      AggregateFunction(count),
-    failed_count     AggregateFunction(countIf, UInt8),
-    duration_sum     AggregateFunction(sum, Nullable(Int64)),
-    duration_max     AggregateFunction(max, Nullable(Int64)),
-    p99_duration     AggregateFunction(quantile(0.99), Nullable(Int64))
-)
-ENGINE = AggregatingMergeTree()
-PARTITION BY (tenant_id, toYYYYMM(bucket))
-ORDER BY (tenant_id, application_id, route_id, processor_id, processor_type, bucket)
-TTL bucket + INTERVAL 365 DAY DELETE;
-
-CREATE MATERIALIZED VIEW IF NOT EXISTS stats_1m_processor_detail_mv TO stats_1m_processor_detail AS
-SELECT
-    tenant_id,
-    application_id,
-    route_id,
-    processor_id,
-    processor_type,
-    toStartOfMinute(start_time)           AS bucket,
-    countState()                           AS total_count,
-    countIfState(status = 'FAILED')        AS failed_count,
-    sumState(duration_ms)                  AS duration_sum,
-    maxState(duration_ms)                  AS duration_max,
-    quantileState(0.99)(duration_ms)       AS p99_duration
-FROM processor_executions
-GROUP BY tenant_id, application_id, route_id, processor_id, processor_type, bucket;
diff --git a/cameleer3-server-app/src/main/resources/clickhouse/V5__replay_fields.sql b/cameleer3-server-app/src/main/resources/clickhouse/V5__replay_fields.sql
deleted file mode 100644
index 0c1d8b8c..00000000
--- a/cameleer3-server-app/src/main/resources/clickhouse/V5__replay_fields.sql
+++ /dev/null
@@ -1,2 +0,0 @@
-ALTER TABLE executions ADD COLUMN IF NOT EXISTS original_exchange_id String DEFAULT '';
-ALTER TABLE executions ADD COLUMN IF NOT EXISTS replay_exchange_id String DEFAULT '';
diff --git a/cameleer3-server-app/src/main/resources/clickhouse/V6__route_diagrams.sql b/cameleer3-server-app/src/main/resources/clickhouse/V6__route_diagrams.sql
deleted file mode 100644
index b57df0f2..00000000
--- a/cameleer3-server-app/src/main/resources/clickhouse/V6__route_diagrams.sql
+++ /dev/null
@@ -1,12 +0,0 @@
-CREATE TABLE IF NOT EXISTS route_diagrams (
-    tenant_id        LowCardinality(String) DEFAULT 'default',
-    content_hash     String,
-    route_id         LowCardinality(String),
-    instance_id      LowCardinality(String),
-    application_id   LowCardinality(String),
-    definition       String,
-    created_at       DateTime64(3) DEFAULT now64(3)
-)
-ENGINE = ReplacingMergeTree(created_at)
-ORDER BY (tenant_id, content_hash)
-SETTINGS index_granularity = 8192;
diff --git a/cameleer3-server-app/src/main/resources/clickhouse/V7__agent_events.sql b/cameleer3-server-app/src/main/resources/clickhouse/V7__agent_events.sql
deleted file mode 100644
index 97278131..00000000
--- a/cameleer3-server-app/src/main/resources/clickhouse/V7__agent_events.sql
+++ /dev/null
@@ -1,12 +0,0 @@
-CREATE TABLE IF NOT EXISTS agent_events (
-    tenant_id   LowCardinality(String) DEFAULT 'default',
-    timestamp   DateTime64(3) DEFAULT now64(3),
-    instance_id    LowCardinality(String),
-    application_id LowCardinality(String),
-    event_type  LowCardinality(String),
-    detail      String DEFAULT ''
-)
-ENGINE = MergeTree()
-PARTITION BY (tenant_id, toYYYYMM(timestamp))
-ORDER BY (tenant_id, application_id, instance_id, timestamp)
-TTL toDateTime(timestamp) + INTERVAL 365 DAY DELETE;
diff --git a/cameleer3-server-app/src/main/resources/clickhouse/V8__logs.sql b/cameleer3-server-app/src/main/resources/clickhouse/V8__logs.sql
deleted file mode 100644
index 02c1bc32..00000000
--- a/cameleer3-server-app/src/main/resources/clickhouse/V8__logs.sql
+++ /dev/null
@@ -1,22 +0,0 @@
-CREATE TABLE IF NOT EXISTS logs (
-    tenant_id    LowCardinality(String) DEFAULT 'default',
-    timestamp    DateTime64(3),
-    application  LowCardinality(String),
-    instance_id  LowCardinality(String),
-    level        LowCardinality(String),
-    logger_name  LowCardinality(String) DEFAULT '',
-    message      String,
-    thread_name  LowCardinality(String) DEFAULT '',
-    stack_trace  String DEFAULT '',
-    exchange_id  String DEFAULT '',
-    mdc          Map(String, String) DEFAULT map(),
-
-    INDEX idx_msg   message TYPE ngrambf_v1(3, 256, 2, 0) GRANULARITY 4,
-    INDEX idx_stack stack_trace TYPE ngrambf_v1(3, 256, 2, 0) GRANULARITY 4,
-    INDEX idx_level level TYPE set(10) GRANULARITY 1
-)
-ENGINE = MergeTree()
-PARTITION BY (tenant_id, toYYYYMM(timestamp))
-ORDER BY (tenant_id, application, timestamp)
-TTL toDateTime(timestamp) + INTERVAL 365 DAY DELETE
-SETTINGS index_granularity = 8192;
diff --git a/cameleer3-server-app/src/main/resources/clickhouse/init.sql b/cameleer3-server-app/src/main/resources/clickhouse/init.sql
new file mode 100644
index 00000000..5b92c4df
--- /dev/null
+++ b/cameleer3-server-app/src/main/resources/clickhouse/init.sql
@@ -0,0 +1,358 @@
+-- ClickHouse schema initialization (single file, idempotent)
+-- All tables use IF NOT EXISTS for safe re-execution on every startup.
+
+-- ── Agent Metrics ───────────────────────────────────────────────────────
+
+CREATE TABLE IF NOT EXISTS agent_metrics (
+    tenant_id          LowCardinality(String) DEFAULT 'default',
+    collected_at       DateTime64(3),
+    instance_id        LowCardinality(String),
+    metric_name        LowCardinality(String),
+    metric_value       Float64,
+    tags               Map(String, String) DEFAULT map(),
+    server_received_at DateTime64(3) DEFAULT now64(3)
+)
+ENGINE = MergeTree()
+PARTITION BY (tenant_id, toYYYYMM(collected_at))
+ORDER BY (tenant_id, instance_id, metric_name, collected_at)
+TTL toDateTime(collected_at) + INTERVAL 365 DAY DELETE
+SETTINGS index_granularity = 8192;
+
+-- ── Executions ──────────────────────────────────────────────────────────
+
+CREATE TABLE IF NOT EXISTS executions (
+    tenant_id            LowCardinality(String) DEFAULT 'default',
+    execution_id         String,
+    start_time           DateTime64(3),
+    _version             UInt64 DEFAULT 1,
+    route_id             LowCardinality(String),
+    instance_id          LowCardinality(String),
+    application_id       LowCardinality(String),
+    status               LowCardinality(String),
+    correlation_id       String DEFAULT '',
+    exchange_id          String DEFAULT '',
+    end_time             Nullable(DateTime64(3)),
+    duration_ms          Nullable(Int64),
+    error_message        String DEFAULT '',
+    error_stacktrace     String DEFAULT '',
+    error_type           LowCardinality(String) DEFAULT '',
+    error_category       LowCardinality(String) DEFAULT '',
+    root_cause_type      String DEFAULT '',
+    root_cause_message   String DEFAULT '',
+    diagram_content_hash String DEFAULT '',
+    engine_level         LowCardinality(String) DEFAULT '',
+    input_body           String DEFAULT '',
+    output_body          String DEFAULT '',
+    input_headers        String DEFAULT '',
+    output_headers       String DEFAULT '',
+    attributes           String DEFAULT '',
+    trace_id             String DEFAULT '',
+    span_id              String DEFAULT '',
+    has_trace_data       Bool DEFAULT false,
+    is_replay            Bool DEFAULT false,
+    original_exchange_id String DEFAULT '',
+    replay_exchange_id   String DEFAULT '',
+
+    _search_text         String MATERIALIZED
+        concat(execution_id, ' ', correlation_id, ' ', exchange_id, ' ', route_id,
+               ' ', error_message, ' ', error_stacktrace, ' ', attributes,
+               ' ', input_body, ' ', output_body, ' ', input_headers,
+               ' ', output_headers, ' ', root_cause_message),
+
+    INDEX idx_search   _search_text TYPE ngrambf_v1(3, 256, 2, 0) GRANULARITY 4,
+    INDEX idx_error    error_message TYPE ngrambf_v1(3, 256, 2, 0) GRANULARITY 4,
+    INDEX idx_bodies   concat(input_body, ' ', output_body) TYPE ngrambf_v1(3, 256, 2, 0) GRANULARITY 4,
+    INDEX idx_headers  concat(input_headers, ' ', output_headers) TYPE ngrambf_v1(3, 256, 2, 0) GRANULARITY 4,
+    INDEX idx_status   status TYPE set(10) GRANULARITY 1,
+    INDEX idx_corr     correlation_id TYPE bloom_filter(0.01) GRANULARITY 4
+)
+ENGINE = ReplacingMergeTree(_version)
+PARTITION BY (tenant_id, toYYYYMM(start_time))
+ORDER BY (tenant_id, start_time, application_id, route_id, execution_id)
+TTL toDateTime(start_time) + INTERVAL 365 DAY DELETE
+SETTINGS index_granularity = 8192;
+
+-- ── Processor Executions ────────────────────────────────────────────────
+
+CREATE TABLE IF NOT EXISTS processor_executions (
+    tenant_id             LowCardinality(String) DEFAULT 'default',
+    execution_id          String,
+    seq                   UInt32,
+    parent_seq            Nullable(UInt32),
+    parent_processor_id   String DEFAULT '',
+    processor_id          String,
+    processor_type        LowCardinality(String),
+    start_time            DateTime64(3),
+    route_id              LowCardinality(String),
+    application_id        LowCardinality(String),
+    iteration             Nullable(Int32),
+    iteration_size        Nullable(Int32),
+    status                LowCardinality(String),
+    end_time              Nullable(DateTime64(3)),
+    duration_ms           Nullable(Int64),
+    error_message         String DEFAULT '',
+    error_stacktrace      String DEFAULT '',
+    error_type            LowCardinality(String) DEFAULT '',
+    error_category        LowCardinality(String) DEFAULT '',
+    root_cause_type       String DEFAULT '',
+    root_cause_message    String DEFAULT '',
+    input_body            String DEFAULT '',
+    output_body           String DEFAULT '',
+    input_headers         String DEFAULT '',
+    output_headers        String DEFAULT '',
+    attributes            String DEFAULT '',
+    resolved_endpoint_uri String DEFAULT '',
+    circuit_breaker_state LowCardinality(String) DEFAULT '',
+    fallback_triggered    Bool DEFAULT false,
+    filter_matched        Bool DEFAULT false,
+    duplicate_message     Bool DEFAULT false,
+
+    _search_text          String MATERIALIZED
+        concat(error_message, ' ', error_stacktrace, ' ', attributes,
+               ' ', input_body, ' ', output_body, ' ', input_headers, ' ', output_headers),
+
+    INDEX idx_search  _search_text TYPE ngrambf_v1(3, 256, 2, 0) GRANULARITY 4,
+    INDEX idx_exec_id execution_id TYPE bloom_filter(0.01) GRANULARITY 4
+)
+ENGINE = MergeTree()
+PARTITION BY (tenant_id, toYYYYMM(start_time))
+ORDER BY (tenant_id, start_time, application_id, route_id, execution_id, seq)
+TTL toDateTime(start_time) + INTERVAL 365 DAY DELETE
+SETTINGS index_granularity = 8192;
+
+-- ── Stats: Materialized Views + AggregatingMergeTree ────────────────────
+
+-- stats_1m_all (global)
+
+CREATE TABLE IF NOT EXISTS stats_1m_all (
+    tenant_id     LowCardinality(String),
+    bucket        DateTime,
+    total_count   AggregateFunction(count),
+    failed_count  AggregateFunction(countIf, UInt8),
+    running_count AggregateFunction(countIf, UInt8),
+    duration_sum  AggregateFunction(sum, Nullable(Int64)),
+    duration_max  AggregateFunction(max, Nullable(Int64)),
+    p99_duration  AggregateFunction(quantile(0.99), Nullable(Int64))
+)
+ENGINE = AggregatingMergeTree()
+PARTITION BY (tenant_id, toYYYYMM(bucket))
+ORDER BY (tenant_id, bucket)
+TTL bucket + INTERVAL 365 DAY DELETE;
+
+CREATE MATERIALIZED VIEW IF NOT EXISTS stats_1m_all_mv TO stats_1m_all AS
+SELECT
+    tenant_id,
+    toStartOfMinute(start_time)           AS bucket,
+    countState()                           AS total_count,
+    countIfState(status = 'FAILED')        AS failed_count,
+    countIfState(status = 'RUNNING')       AS running_count,
+    sumState(duration_ms)                  AS duration_sum,
+    maxState(duration_ms)                  AS duration_max,
+    quantileState(0.99)(duration_ms)       AS p99_duration
+FROM executions
+GROUP BY tenant_id, bucket;
+
+-- stats_1m_app (per-application)
+
+CREATE TABLE IF NOT EXISTS stats_1m_app (
+    tenant_id      LowCardinality(String),
+    application_id LowCardinality(String),
+    bucket         DateTime,
+    total_count    AggregateFunction(count),
+    failed_count   AggregateFunction(countIf, UInt8),
+    running_count  AggregateFunction(countIf, UInt8),
+    duration_sum   AggregateFunction(sum, Nullable(Int64)),
+    duration_max   AggregateFunction(max, Nullable(Int64)),
+    p99_duration   AggregateFunction(quantile(0.99), Nullable(Int64))
+)
+ENGINE = AggregatingMergeTree()
+PARTITION BY (tenant_id, toYYYYMM(bucket))
+ORDER BY (tenant_id, application_id, bucket)
+TTL bucket + INTERVAL 365 DAY DELETE;
+
+CREATE MATERIALIZED VIEW IF NOT EXISTS stats_1m_app_mv TO stats_1m_app AS
+SELECT
+    tenant_id,
+    application_id,
+    toStartOfMinute(start_time)           AS bucket,
+    countState()                           AS total_count,
+    countIfState(status = 'FAILED')        AS failed_count,
+    countIfState(status = 'RUNNING')       AS running_count,
+    sumState(duration_ms)                  AS duration_sum,
+    maxState(duration_ms)                  AS duration_max,
+    quantileState(0.99)(duration_ms)       AS p99_duration
+FROM executions
+GROUP BY tenant_id, application_id, bucket;
+
+-- stats_1m_route (per-route)
+
+CREATE TABLE IF NOT EXISTS stats_1m_route (
+    tenant_id      LowCardinality(String),
+    application_id LowCardinality(String),
+    route_id       LowCardinality(String),
+    bucket         DateTime,
+    total_count    AggregateFunction(count),
+    failed_count   AggregateFunction(countIf, UInt8),
+    running_count  AggregateFunction(countIf, UInt8),
+    duration_sum   AggregateFunction(sum, Nullable(Int64)),
+    duration_max   AggregateFunction(max, Nullable(Int64)),
+    p99_duration   AggregateFunction(quantile(0.99), Nullable(Int64))
+)
+ENGINE = AggregatingMergeTree()
+PARTITION BY (tenant_id, toYYYYMM(bucket))
+ORDER BY (tenant_id, application_id, route_id, bucket)
+TTL bucket + INTERVAL 365 DAY DELETE;
+
+CREATE MATERIALIZED VIEW IF NOT EXISTS stats_1m_route_mv TO stats_1m_route AS
+SELECT
+    tenant_id,
+    application_id,
+    route_id,
+    toStartOfMinute(start_time)           AS bucket,
+    countState()                           AS total_count,
+    countIfState(status = 'FAILED')        AS failed_count,
+    countIfState(status = 'RUNNING')       AS running_count,
+    sumState(duration_ms)                  AS duration_sum,
+    maxState(duration_ms)                  AS duration_max,
+    quantileState(0.99)(duration_ms)       AS p99_duration
+FROM executions
+GROUP BY tenant_id, application_id, route_id, bucket;
+
+-- stats_1m_processor (per-processor-type)
+
+CREATE TABLE IF NOT EXISTS stats_1m_processor (
+    tenant_id      LowCardinality(String),
+    application_id LowCardinality(String),
+    processor_type LowCardinality(String),
+    bucket         DateTime,
+    total_count    AggregateFunction(count),
+    failed_count   AggregateFunction(countIf, UInt8),
+    duration_sum   AggregateFunction(sum, Nullable(Int64)),
+    duration_max   AggregateFunction(max, Nullable(Int64)),
+    p99_duration   AggregateFunction(quantile(0.99), Nullable(Int64))
+)
+ENGINE = AggregatingMergeTree()
+PARTITION BY (tenant_id, toYYYYMM(bucket))
+ORDER BY (tenant_id, application_id, processor_type, bucket)
+TTL bucket + INTERVAL 365 DAY DELETE;
+
+CREATE MATERIALIZED VIEW IF NOT EXISTS stats_1m_processor_mv TO stats_1m_processor AS
+SELECT
+    tenant_id,
+    application_id,
+    processor_type,
+    toStartOfMinute(start_time)           AS bucket,
+    countState()                           AS total_count,
+    countIfState(status = 'FAILED')        AS failed_count,
+    sumState(duration_ms)                  AS duration_sum,
+    maxState(duration_ms)                  AS duration_max,
+    quantileState(0.99)(duration_ms)       AS p99_duration
+FROM processor_executions
+GROUP BY tenant_id, application_id, processor_type, bucket;
+
+-- stats_1m_processor_detail (per-processor-id)
+
+CREATE TABLE IF NOT EXISTS stats_1m_processor_detail (
+    tenant_id      LowCardinality(String),
+    application_id LowCardinality(String),
+    route_id       LowCardinality(String),
+    processor_id   String,
+    processor_type LowCardinality(String),
+    bucket         DateTime,
+    total_count    AggregateFunction(count),
+    failed_count   AggregateFunction(countIf, UInt8),
+    duration_sum   AggregateFunction(sum, Nullable(Int64)),
+    duration_max   AggregateFunction(max, Nullable(Int64)),
+    p99_duration   AggregateFunction(quantile(0.99), Nullable(Int64))
+)
+ENGINE = AggregatingMergeTree()
+PARTITION BY (tenant_id, toYYYYMM(bucket))
+ORDER BY (tenant_id, application_id, route_id, processor_id, processor_type, bucket)
+TTL bucket + INTERVAL 365 DAY DELETE;
+
+CREATE MATERIALIZED VIEW IF NOT EXISTS stats_1m_processor_detail_mv TO stats_1m_processor_detail AS
+SELECT
+    tenant_id,
+    application_id,
+    route_id,
+    processor_id,
+    processor_type,
+    toStartOfMinute(start_time)           AS bucket,
+    countState()                           AS total_count,
+    countIfState(status = 'FAILED')        AS failed_count,
+    sumState(duration_ms)                  AS duration_sum,
+    maxState(duration_ms)                  AS duration_max,
+    quantileState(0.99)(duration_ms)       AS p99_duration
+FROM processor_executions
+GROUP BY tenant_id, application_id, route_id, processor_id, processor_type, bucket;
+
+-- ── Route Diagrams ──────────────────────────────────────────────────────
+
+CREATE TABLE IF NOT EXISTS route_diagrams (
+    tenant_id        LowCardinality(String) DEFAULT 'default',
+    content_hash     String,
+    route_id         LowCardinality(String),
+    instance_id      LowCardinality(String),
+    application_id   LowCardinality(String),
+    definition       String,
+    created_at       DateTime64(3) DEFAULT now64(3)
+)
+ENGINE = ReplacingMergeTree(created_at)
+ORDER BY (tenant_id, content_hash)
+SETTINGS index_granularity = 8192;
+
+-- ── Agent Events ────────────────────────────────────────────────────────
+
+CREATE TABLE IF NOT EXISTS agent_events (
+    tenant_id      LowCardinality(String) DEFAULT 'default',
+    timestamp      DateTime64(3) DEFAULT now64(3),
+    instance_id    LowCardinality(String),
+    application_id LowCardinality(String),
+    event_type     LowCardinality(String),
+    detail         String DEFAULT ''
+)
+ENGINE = MergeTree()
+PARTITION BY (tenant_id, toYYYYMM(timestamp))
+ORDER BY (tenant_id, application_id, instance_id, timestamp)
+TTL toDateTime(timestamp) + INTERVAL 365 DAY DELETE;
+
+-- ── Logs ────────────────────────────────────────────────────────────────
+
+CREATE TABLE IF NOT EXISTS logs (
+    tenant_id    LowCardinality(String) DEFAULT 'default',
+    timestamp    DateTime64(3),
+    application  LowCardinality(String),
+    instance_id  LowCardinality(String),
+    level        LowCardinality(String),
+    logger_name  LowCardinality(String) DEFAULT '',
+    message      String,
+    thread_name  LowCardinality(String) DEFAULT '',
+    stack_trace  String DEFAULT '',
+    exchange_id  String DEFAULT '',
+    mdc          Map(String, String) DEFAULT map(),
+
+    INDEX idx_msg   message TYPE ngrambf_v1(3, 256, 2, 0) GRANULARITY 4,
+    INDEX idx_stack stack_trace TYPE ngrambf_v1(3, 256, 2, 0) GRANULARITY 4,
+    INDEX idx_level level TYPE set(10) GRANULARITY 1
+)
+ENGINE = MergeTree()
+PARTITION BY (tenant_id, toYYYYMM(timestamp))
+ORDER BY (tenant_id, application, timestamp)
+TTL toDateTime(timestamp) + INTERVAL 365 DAY DELETE
+SETTINGS index_granularity = 8192;
+
+-- ── Usage Events ────────────────────────────────────────────────────────
+
+CREATE TABLE IF NOT EXISTS usage_events (
+    timestamp    DateTime64(3) DEFAULT now64(3),
+    username     LowCardinality(String),
+    method       LowCardinality(String),
+    path         String,
+    normalized   LowCardinality(String),
+    status_code  UInt16,
+    duration_ms  UInt32,
+    query_params String DEFAULT ''
+)
+ENGINE = MergeTree()
+ORDER BY (username, timestamp)
+TTL toDateTime(timestamp) + INTERVAL 90 DAY;