Tag: Monitoring & Observability

Monitoring and observability are essential for operating Geode in production environments. Comprehensive monitoring enables you to track system health, identify performance bottlenecks, detect anomalies, and respond to issues before they impact users. Geode provides rich telemetry through Prometheus metrics, structured logging, distributed tracing, and real-time performance profiling. Combined with integration capabilities for popular monitoring stacks like Grafana, Datadog, and New Relic, Geode gives you deep visibility into your graph database operations. This guide covers monitoring strategies, key metrics, alerting patterns, and best practices for maintaining observable Geode deployments. <h3 id="key-monitoring-concepts" class="position-relative d-flex align-items-center group"> Key Monitoring Concepts <button type="button" class="h-share btn btn-link p-0 text-decoration-none link-secondary opacity-50 hover-opacity-100 transition-all ms-1" data-share-target="key-monitoring-concepts" aria-haspopup="dialog" aria-label="Share link: Key Monitoring Concepts"> Share link </button> </h3><div id="headingShareModal" class="heading-share-modal" role="dialog" aria-modal="true" aria-labelledby="headingShareTitle" hidden> <div class="hsm-dialog" role="document"> <div class="hsm-header"> <h2 id="headingShareTitle" class="h6 mb-0 fw-bold">Share this section</h2> <button type="button" class="hsm-close" aria-label="Close"> </button> </div> <div class="hsm-body"> <label for="headingShareInput" class="form-label small text-muted mb-1 text-uppercase fw-bold" style="font-size: 0.7rem; letter-spacing: 0.5px;">Permalink</label> <div class="input-group mb-4 hsm-url-group"> <input id="headingShareInput" type="text" class="form-control font-monospace" readonly aria-readonly="true" style="font-size: 0.85rem;" /> <button class="btn btn-primary hsm-copy" type="button" aria-label="Copy" title="Copy"> </button> </div> <div class="small fw-bold mb-2 text-muted text-uppercase" style="font-size: 0.7rem; letter-spacing: 0.5px;">Share via</div> <div class="hsm-share-grid"> <a id="share-twitter" class="btn btn-outline-secondary w-100" target="_blank" rel="noopener noreferrer"> Twitter </a> <a id="share-linkedin" class="btn btn-outline-secondary w-100" target="_blank" rel="noopener noreferrer"> LinkedIn </a> <a id="share-facebook" class="btn btn-outline-secondary w-100" target="_blank" rel="noopener noreferrer"> Facebook </a> </div> </div> </div> </div> <style> .heading-share-modal { position: fixed; inset: 0; display: flex; justify-content: center; align-items: center; background: rgba(0, 0, 0, 0.6); 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const enc=encodeURIComponent(url); const text=encodeURIComponent(document.title); if(twitter) twitter.href=`https://twitter.com/intent/tweet?url=${enc}&text=${text}`; if(linkedin) linkedin.href=`https://www.linkedin.com/sharing/share-offsite/?url=${enc}`; if(facebook) facebook.href=`https://www.facebook.com/sharer/sharer.php?u=${enc}`; } function openModal(id){ lastFocus=document.activeElement; hydrate(id); if(!isOpen()){ modal.removeAttribute('hidden'); } requestAnimationFrame(()=>{ input.focus(); }); trapFocus(); } function closeModal(){ if(!isOpen()) return; modal.setAttribute('hidden',''); if(lastFocus && typeof lastFocus.focus==='function') lastFocus.focus(); } function copyCurrent(){ try{ navigator.clipboard.writeText(input.value).then(()=>feedback(true),()=>fallback()); } catch(e){ fallback(); } } function fallback(){ input.select(); try{ document.execCommand('copy'); feedback(true);}catch(e){ feedback(false);} } function feedback(ok){ if(!copyBtn) return; const icon=copyBtn.querySelector('i'); if(!icon) return; const prev=copyBtn.getAttribute('data-prev')||icon.className; if(!copyBtn.getAttribute('data-prev')) copyBtn.setAttribute('data-prev',prev); icon.className= ok ? 'fa-duotone fa-clipboard-check':'fa-duotone fa-circle-exclamation'; setTimeout(()=>{ icon.className=prev; },1800); } function handleShareClick(e){ e.preventDefault(); const btn=e.currentTarget; const id=btn.getAttribute('data-share-target'); if(id) openModal(id); } function bindShareButtons(){ document.querySelectorAll('.h-share').forEach(btn=>{ if(!btn.dataset.hShareBound){ btn.addEventListener('click', handleShareClick); btn.dataset.hShareBound='1'; } }); } bindShareButtons(); if(document.readyState==='loading'){ document.addEventListener('DOMContentLoaded', bindShareButtons); } else { requestAnimationFrame(bindShareButtons); } document.addEventListener('click', function(e){ const shareBtn=e.target.closest && e.target.closest('.h-share'); if(shareBtn && !shareBtn.dataset.hShareBound){ handleShareClick.call(shareBtn, e); } }, true); document.addEventListener('click', e=>{ if(e.target===modal) closeModal(); if(e.target.closest && e.target.closest('.hsm-close')){ e.preventDefault(); closeModal(); } if(copyBtn && (e.target===copyBtn || (e.target.closest && e.target.closest('.hsm-copy')))) { e.preventDefault(); copyCurrent(); } }); document.addEventListener('keydown', e=>{ if(e.key==='Escape' && isOpen()) closeModal(); }); function trapFocus(){ if(trapBound) return; trapBound=true; modal.addEventListener('keydown', f=>{ if(f.key==='Tab' && isOpen()){ const focusable=[...modal.querySelectorAll('a[href],button,input,textarea,select,[tabindex]:not([tabindex="-1"])')].filter(el=>!el.hasAttribute('disabled')); if(!focusable.length) return; const first=focusable[0]; const last=focusable[focusable.length-1]; if(f.shiftKey && document.activeElement===first){ f.preventDefault(); last.focus(); } else if(!f.shiftKey && document.activeElement===last){ f.preventDefault(); first.focus(); } } }); } if(closeBtn) closeBtn.addEventListener('click', e=>{ e.preventDefault(); closeModal(); }); })(); </script>Metrics: Quantitative measurements of system behavior collected over time. Geode exposes hundreds of metrics covering queries, transactions, connections, memory, disk I/O, and more. Logs: Structured event records providing detailed context about system operations, errors, and state changes. Geode uses structured JSON logging for easy parsing and analysis. Traces: End-to-end tracking of requests through distributed systems. Geode supports OpenTelemetry for distributed tracing across services. Profiling: Runtime analysis of query execution, resource utilization, and performance characteristics. Use Geode’s <code>PROFILE</code> command for query-level profiling. <h3 id="prometheus-metrics-integration" class="position-relative d-flex align-items-center group"> Prometheus Metrics Integration <button type="button" class="h-share btn btn-link p-0 text-decoration-none link-secondary opacity-50 hover-opacity-100 transition-all ms-1" data-share-target="prometheus-metrics-integration" aria-haspopup="dialog" aria-label="Share link: Prometheus Metrics Integration"> Share link </button> </h3>Geode exposes metrics in Prometheus format at the <code>/metrics</code> endpoint: <div class="highlight"><pre tabindex="0" class="chroma"><code class="language-bash" data-lang="bash"># Access metrics endpoint curl http://localhost:3141/metrics # Sample metrics output geode_queries_total{status="success"} 12847 geode_queries_total{status="error"} 23 geode_query_duration_seconds_bucket{le="0.1"} 8234 geode_active_connections{client="go"} 45 geode_transaction_duration_seconds_sum 1847.3 </code></pre></div>Configure Prometheus Scraping: <div class="highlight"><pre tabindex="0" class="chroma"><code class="language-yaml" data-lang="yaml"># prometheus.yml scrape_configs: - job_name: 'geode' static_configs: - targets: ['localhost:3141'] scrape_interval: 15s scrape_timeout: 10s </code></pre></div> <h3 id="essential-metrics-to-monitor" class="position-relative d-flex align-items-center group"> Essential Metrics to Monitor <button type="button" class="h-share btn btn-link p-0 text-decoration-none link-secondary opacity-50 hover-opacity-100 transition-all ms-1" data-share-target="essential-metrics-to-monitor" aria-haspopup="dialog" aria-label="Share link: Essential Metrics to Monitor"> Share link </button> </h3>Query Performance Metrics: <ul> <li><code>geode_queries_total</code>: Total query count by status</li> <li><code>geode_query_duration_seconds</code>: Query latency histogram</li> <li><code>geode_query_execution_plan_cache_hits</code>: Query plan cache effectiveness</li> <li><code>geode_slow_queries_total</code>: Queries exceeding threshold</li> </ul> Transaction Metrics: <ul> <li><code>geode_transactions_total</code>: Transaction count by outcome (commit/rollback)</li> <li><code>geode_transaction_duration_seconds</code>: Transaction latency</li> <li><code>geode_transaction_conflicts_total</code>: Serialization conflicts</li> <li><code>geode_active_transactions</code>: Currently executing transactions</li> </ul> Connection Metrics: <ul> <li><code>geode_active_connections</code>: Current client connections</li> <li><code>geode_connection_errors_total</code>: Failed connection attempts</li> <li><code>geode_connection_pool_size</code>: Connection pool utilization</li> <li><code>geode_quic_streams_active</code>: Active QUIC streams</li> </ul> Memory Metrics: <ul> <li><code>geode_memory_used_bytes</code>: Total memory consumption</li> <li><code>geode_cache_size_bytes</code>: Query cache and buffer pool sizes</li> <li><code>geode_mvcc_versions_count</code>: MVCC version overhead</li> <li><code>geode_memory_allocations_total</code>: Allocation rate</li> </ul> Storage Metrics: <ul> <li><code>geode_disk_used_bytes</code>: Disk space consumption</li> <li><code>geode_wal_size_bytes</code>: Write-ahead log size</li> <li><code>geode_disk_io_operations_total</code>: I/O operations by type</li> <li><code>geode_checkpoint_duration_seconds</code>: Checkpoint performance</li> </ul> Index Metrics: <ul> <li><code>geode_index_size_bytes</code>: Index storage consumption</li> <li><code>geode_index_lookups_total</code>: Index usage frequency</li> <li><code>geode_index_build_duration_seconds</code>: Index creation time</li> </ul> <h3 id="structured-logging" class="position-relative d-flex align-items-center group"> Structured Logging <button type="button" class="h-share btn btn-link p-0 text-decoration-none link-secondary opacity-50 hover-opacity-100 transition-all ms-1" data-share-target="structured-logging" aria-haspopup="dialog" aria-label="Share link: Structured Logging"> Share link </button> </h3>Geode emits structured logs in JSON format for easy processing: <div class="highlight"><pre tabindex="0" class="chroma"><code class="language-json" data-lang="json">{ "timestamp": "2024-01-24T10:15:30.123Z", "level": "INFO", "message": "Query executed successfully", "query_id": "q-12847", "user": "analyst", "duration_ms": 45.3, "rows_returned": 1250, "plan_type": "indexed_lookup" } </code></pre></div>Configure Log Levels: <div class="highlight"><pre tabindex="0" class="chroma"><code class="language-toml" data-lang="toml"># geode.toml [logging] level = "INFO" # DEBUG, INFO, WARN, ERROR format = "json" output = "stdout" file = "/var/log/geode/geode.log" rotate_size = "100MB" rotate_count = 10 </code></pre></div>Log Categories: <ul> <li><code>query</code>: Query execution and planning</li> <li><code>transaction</code>: Transaction lifecycle events</li> <li><code>connection</code>: Client connections and disconnections</li> <li><code>storage</code>: Disk I/O and persistence operations</li> <li><code>replication</code>: Replication and cluster coordination</li> <li><code>security</code>: Authentication and authorization events</li> </ul> <h3 id="query-profiling-and-analysis" class="position-relative d-flex align-items-center group"> Query Profiling and Analysis <button type="button" class="h-share btn btn-link p-0 text-decoration-none link-secondary opacity-50 hover-opacity-100 transition-all ms-1" data-share-target="query-profiling-and-analysis" aria-haspopup="dialog" aria-label="Share link: Query Profiling and Analysis"> Share link </button> </h3>Use Geode’s built-in profiling capabilities to analyze query performance: <div class="highlight"><pre tabindex="0" class="chroma"><code class="language-gql" data-lang="gql">-- Profile a query PROFILE MATCH (u:User)-[:FOLLOWS]->(other:User) WHERE u.created_at > '2024-01-01' RETURN u.name, count(other) as followers ORDER BY followers DESC LIMIT 10; </code></pre></div>Profile Output: <div class="highlight"><pre tabindex="0" class="chroma"><code class="language-fallback" data-lang="fallback">┌────────────────────┬─────────┬─────────────┬───────────┐ │ Operator │ Rows │ Time (ms) │ Memory │ ├────────────────────┼─────────┼─────────────┼───────────┤ │ Sort + Limit │ 10 │ 2.3 │ 1.2 KB │ │ Aggregation │ 8,432 │ 45.7 │ 2.4 MB │ │ Expand(FOLLOWS) │ 421,082 │ 187.4 │ 12.8 MB │ │ IndexSeek(User) │ 8,432 │ 12.1 │ 856 KB │ └────────────────────┴─────────┴─────────────┴───────────┘ </code></pre></div>Explain Query Plans: <div class="highlight"><pre tabindex="0" class="chroma"><code class="language-gql" data-lang="gql">-- View execution plan without running query EXPLAIN MATCH (u:User {email: 'user@example.com'}) RETURN u; </code></pre></div> <h3 id="alerting-strategies" class="position-relative d-flex align-items-center group"> Alerting Strategies <button type="button" class="h-share btn btn-link p-0 text-decoration-none link-secondary opacity-50 hover-opacity-100 transition-all ms-1" data-share-target="alerting-strategies" aria-haspopup="dialog" aria-label="Share link: Alerting Strategies"> Share link </button> </h3>Configure alerts for critical conditions: High Error Rate: <div class="highlight"><pre tabindex="0" class="chroma"><code class="language-yaml" data-lang="yaml"># Prometheus alerting rule groups: - name: geode_alerts rules: - alert: HighQueryErrorRate expr: | rate(geode_queries_total{status="error"}[5m]) > 10 for: 5m annotations: summary: "High query error rate detected" description: "Error rate is {{ $value }} errors/sec" </code></pre></div>Slow Query Detection: <div class="highlight"><pre tabindex="0" class="chroma"><code class="language-yaml" data-lang="yaml">- alert: SlowQueriesIncreasing expr: | rate(geode_slow_queries_total[5m]) > 5 for: 10m annotations: summary: "Slow query rate increasing" </code></pre></div>Connection Pool Exhaustion: <div class="highlight"><pre tabindex="0" class="chroma"><code class="language-yaml" data-lang="yaml">- alert: ConnectionPoolExhausted expr: | geode_active_connections >= geode_max_connections * 0.9 for: 5m annotations: summary: "Connection pool near capacity" </code></pre></div>Disk Space Low: <div class="highlight"><pre tabindex="0" class="chroma"><code class="language-yaml" data-lang="yaml">- alert: DiskSpaceLow expr: | geode_disk_free_bytes / geode_disk_total_bytes < 0.1 for: 15m annotations: summary: "Disk space below 10%" </code></pre></div>Transaction Conflict Rate High: <div class="highlight"><pre tabindex="0" class="chroma"><code class="language-yaml" data-lang="yaml">- alert: HighTransactionConflicts expr: | rate(geode_transaction_conflicts_total[5m]) > 100 for: 10m annotations: summary: "High transaction conflict rate" </code></pre></div> <h3 id="grafana-dashboard-integration" class="position-relative d-flex align-items-center group"> Grafana Dashboard Integration <button type="button" class="h-share btn btn-link p-0 text-decoration-none link-secondary opacity-50 hover-opacity-100 transition-all ms-1" data-share-target="grafana-dashboard-integration" aria-haspopup="dialog" aria-label="Share link: Grafana Dashboard Integration"> Share link </button> </h3>Create comprehensive Grafana dashboards for Geode monitoring: Query Performance Dashboard: <div class="highlight"><pre tabindex="0" class="chroma"><code class="language-json" data-lang="json">{ "dashboard": { "title": "Geode Query Performance", "panels": [ { "title": "Query Rate", "targets": [{ "expr": "rate(geode_queries_total[5m])" }] }, { "title": "Query Latency (p95)", "targets": [{ "expr": "histogram_quantile(0.95, rate(geode_query_duration_seconds_bucket[5m]))" }] }, { "title": "Active Queries", "targets": [{ "expr": "geode_active_queries" }] } ] } } </code></pre></div> <h3 id="distributed-tracing" class="position-relative d-flex align-items-center group"> Distributed Tracing <button type="button" class="h-share btn btn-link p-0 text-decoration-none link-secondary opacity-50 hover-opacity-100 transition-all ms-1" data-share-target="distributed-tracing" aria-haspopup="dialog" aria-label="Share link: Distributed Tracing"> Share link </button> </h3>Enable OpenTelemetry tracing for end-to-end visibility: <div class="highlight"><pre tabindex="0" class="chroma"><code class="language-toml" data-lang="toml"># geode.toml [tracing] enabled = true exporter = "otlp" endpoint = "http://localhost:4317" sample_rate = 0.1 # Sample 10% of traces </code></pre></div>Trace Example: <div class="highlight"><pre tabindex="0" class="chroma"><code class="language-fallback" data-lang="fallback">Trace: user_recommendation_flow ├─ http_request [200ms] │ └─ geode_query: match_user_preferences [120ms] │ ├─ index_lookup: user_by_id [5ms] │ ├─ expand_relationships: purchased [80ms] │ └─ aggregation: compute_scores [35ms] └─ cache_update [10ms] </code></pre></div> <h3 id="health-checks-and-readiness" class="position-relative d-flex align-items-center group"> Health Checks and Readiness <button type="button" class="h-share btn btn-link p-0 text-decoration-none link-secondary opacity-50 hover-opacity-100 transition-all ms-1" data-share-target="health-checks-and-readiness" aria-haspopup="dialog" aria-label="Share link: Health Checks and Readiness"> Share link </button> </h3>Implement health check endpoints for orchestration platforms: <div class="highlight"><pre tabindex="0" class="chroma"><code class="language-bash" data-lang="bash"># Liveness probe (is Geode running?) curl http://localhost:3141/health/live # Returns: {"status": "ok"} # Readiness probe (can Geode serve traffic?) curl http://localhost:3141/health/ready # Returns: {"status": "ready", "connections": 45, "queries_per_sec": 127} </code></pre></div>Kubernetes Configuration: <div class="highlight"><pre tabindex="0" class="chroma"><code class="language-yaml" data-lang="yaml">livenessProbe: httpGet: path: /health/live port: 3141 initialDelaySeconds: 30 periodSeconds: 10 readinessProbe: httpGet: path: /health/ready port: 3141 initialDelaySeconds: 5 periodSeconds: 5 </code></pre></div> <h3 id="performance-tuning-with-monitoring-data" class="position-relative d-flex align-items-center group"> Performance Tuning with Monitoring Data <button type="button" class="h-share btn btn-link p-0 text-decoration-none link-secondary opacity-50 hover-opacity-100 transition-all ms-1" data-share-target="performance-tuning-with-monitoring-data" aria-haspopup="dialog" aria-label="Share link: Performance Tuning with Monitoring Data"> Share link </button> </h3>Use monitoring data to identify optimization opportunities: Identify Hot Queries: <div class="highlight"><pre tabindex="0" class="chroma"><code class="language-gql" data-lang="gql">-- View query statistics SELECT query_text, execution_count, avg_duration_ms, max_duration_ms FROM system.query_stats WHERE execution_count > 1000 ORDER BY avg_duration_ms DESC LIMIT 20; </code></pre></div>Analyze Index Usage: <div class="highlight"><pre tabindex="0" class="chroma"><code class="language-gql" data-lang="gql">-- Find unused indexes SELECT index_name, table_name, usage_count FROM system.index_stats WHERE usage_count = 0 AND created_at < current_timestamp() - INTERVAL '7 days'; </code></pre></div>Monitor Cache Effectiveness: <div class="highlight"><pre tabindex="0" class="chroma"><code class="language-gql" data-lang="gql">-- Check cache hit rates SELECT cache_hits / (cache_hits + cache_misses) as hit_rate, cache_evictions FROM system.cache_stats; </code></pre></div> <h3 id="troubleshooting-common-issues" class="position-relative d-flex align-items-center group"> Troubleshooting Common Issues <button type="button" class="h-share btn btn-link p-0 text-decoration-none link-secondary opacity-50 hover-opacity-100 transition-all ms-1" data-share-target="troubleshooting-common-issues" aria-haspopup="dialog" aria-label="Share link: Troubleshooting Common Issues"> Share link </button> </h3>High Query Latency: <ol> <li>Check <code>PROFILE</code> output for slow operators</li> <li>Verify index usage with <code>EXPLAIN</code></li> <li>Review concurrent query load</li> <li>Check memory pressure and cache hit rates</li> </ol> Connection Issues: <ol> <li>Monitor <code>geode_active_connections</code> vs. limits</li> <li>Check network latency between client and server</li> <li>Review authentication failures in logs</li> <li>Verify TLS certificate validity</li> </ol> Memory Growth: <ol> <li>Check MVCC version accumulation</li> <li>Review long-running transactions</li> <li>Analyze query result set sizes</li> <li>Monitor cache sizes</li> </ol> Disk Space Issues: <ol> <li>Check WAL size growth</li> <li>Review checkpoint frequency</li> <li>Analyze data growth rate</li> <li>Verify backup and archival processes</li> </ol> <h3 id="best-practices" class="position-relative d-flex align-items-center group"> Best Practices <button type="button" class="h-share btn btn-link p-0 text-decoration-none link-secondary opacity-50 hover-opacity-100 transition-all ms-1" data-share-target="best-practices" aria-haspopup="dialog" aria-label="Share link: Best Practices"> Share link </button> </h3>Establish Baselines: Monitor systems under normal load to establish performance baselines for comparison. Set Appropriate Thresholds: Tune alert thresholds based on actual system behavior to minimize false positives. Implement Gradual Rollout: When deploying changes, monitor metrics closely during incremental rollouts. Correlate Metrics with Events: Link monitoring data with deployment events, configuration changes, and incidents. Automate Responses: Implement auto-scaling, auto-remediation, and circuit breakers based on monitoring signals. Regular Review: Periodically review dashboards, alerts, and runbooks to keep them relevant. <h3 id="related-topics" class="position-relative d-flex align-items-center group"> Related Topics <button type="button" class="h-share btn btn-link p-0 text-decoration-none link-secondary opacity-50 hover-opacity-100 transition-all ms-1" data-share-target="related-topics" aria-haspopup="dialog" aria-label="Share link: Related Topics"> Share link </button> </h3><ul> <li><a href="/tags/prometheus/" >Prometheus Metrics & Monitoring</a> </li> <li><a href="/tags/performance/" >Performance Tuning</a> </li> <li><a href="/tags/query-optimization/" >Query Optimization</a> </li> <li><a href="/tags/observability/" >Observability Best Practices</a> </li> <li><a href="/tags/operations/" >Operations and DevOps</a> </li> <li><a href="/tags/profiling/" >Profiling and Analysis</a> </li> <li><a href="/tags/troubleshooting/" >Troubleshooting Guide</a> </li> </ul> <h3 id="further-reading" class="position-relative d-flex align-items-center group"> Further Reading <button type="button" class="h-share btn btn-link p-0 text-decoration-none link-secondary opacity-50 hover-opacity-100 transition-all ms-1" data-share-target="further-reading" aria-haspopup="dialog" aria-label="Share link: Further Reading"> Share link </button> </h3><ul> <li>Monitoring and Observability Guide</li> <li>Grafana Dashboard Templates</li> <li>Alert Runbook Templates</li> <li>Performance Tuning Handbook</li> <li>Production Operations Checklist</li> </ul>

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