Skill Claude CodeCodex
Guides benchmarking and comparing explicit multi-statement transactions versus single-statement CTE transactions in CockroachDB, with fair test methodology, contention analysis, and performance interpretation. Use when comparing transaction formulations, benchmarking CockroachDB workloads under contention…
Skill Claude CodeCodex
Guides application developers in designing correct and performant transaction patterns for CockroachDB, covering transaction lifetime, implicit vs explicit transactions, retry handling with exponential backoff, pushing invariants into SQL, selective pessimistic locking, set-based operations, connection pooling…
Skill Claude CodeCodex
Guides developers in selecting and implementing multi-region patterns for CockroachDB applications, covering active-passive vs active-active architectures, REGIONAL BY ROW, GLOBAL tables, manual geo-partitioning with lease preferences, and live demo setup with validation queries. Use when designing multi-region…
Skill Claude CodeCodex
Analyzes CockroachDB range distribution across tables and indexes using SHOW RANGES to identify range count, size patterns, leaseholder placement, and replication health. Use when investigating hotspots, uneven data distribution, range fragmentation, or validating zone configuration effects without DB Console access.
Skill Claude CodeCodex
Estimates storage requirements for CockroachDB online schema change backfills using SHOW RANGES WITH DETAILS, KEYS, INDEXES. Use before CREATE INDEX, ADD COLUMN with INDEX/UNIQUE, ALTER PRIMARY KEY, CREATE MATERIALIZED VIEW, CREATE TABLE AS, REFRESH, or SET LOCALITY on tables with large per-index footprints, to avoid…
Skill Claude CodeCodex
Audits optimizer table statistics for staleness, missing coverage, and data quality issues using SHOW STATISTICS. Use when diagnosing poor query performance, unexpected plan changes, or after bulk data changes to identify stale statistics requiring refresh via CREATE STATISTICS.
Skill Claude CodeCodex
Monitors CockroachDB background job health by identifying failed, paused, and long-running jobs using SHOW JOBS and SHOW AUTOMATIC JOBS. Surfaces schema changes, backups/restores, automatic statistics collection, and SQL stats compaction jobs without DB Console access. Use when investigating schema change delays…
Skill Claude CodeCodex
Ranks and analyzes statement fingerprints using aggregated SQL statistics from crdbinternal.statementstatistics to identify slow, resource-intensive, or error-prone query patterns. Use when investigating historical performance trends, identifying optimization opportunities, or diagnosing recurring slowness without DB…
Skill Claude CodeCodex
Analyzes transaction fingerprints using aggregated statistics from crdbinternal.transactionstatistics to identify high-retry transactions, contention patterns, and commit latency issues. Provides historical transaction-level analysis to understand which statement combinations are causing retries, contention, or…
Skill Claude CodeCodex
Diagnoses live CockroachDB cluster performance issues by identifying long-running queries, busy sessions, and active transactions using SQL-only interfaces. Use when users report cluster slowness, high CPU, or need to find runaway queries and their source applications without DB Console access.
Skill Claude CodeCodex
Guide for using molt fetch to migrate data from PostgreSQL, MySQL, Oracle, or MSSQL to CockroachDB. Use when running molt fetch commands, configuring storage backends, handling fetch failures/resumption, or chaining fetch with verify.
Skill Claude CodeCodex
Guide for using the CockroachDB replicator to continuously replicate changes from PostgreSQL, MySQL, or Oracle to CockroachDB after an initial molt fetch data load. Use when setting up CDC replication, configuring pglogical/mylogical/oraclelogminer, or managing the fetch → replicator cutover workflow.
Skill Claude CodeCodex
Guide for using molt verify to compare source and target databases for schema and row-level consistency after a migration. Use when running verify commands, tuning concurrency/sharding, handling schema mismatches, or validating data integrity post-migration.
Skill Claude CodeCodex
Downloads and starts a local CockroachDB cluster for development using the official binary. Use when a developer needs a local CockroachDB instance, when no cluster is available, or when setting up a new development environment.
Skill Claude CodeCodex
Manages TLS certificate and encryption key lifecycle across all tiers. Self-Hosted covers certificate expiry monitoring, node/CA/client cert rotation, and Kubernetes cert management. Advanced/BYOC covers managed TLS (no action) and CMEK (Customer-Managed Encryption Key) rotation in your KMS. Standard and Basic have…
Skill Claude CodeCodex
Manages CockroachDB cluster capacity across all tiers. Self-Hosted covers node decommissioning for permanent removal and adding nodes for expansion. Advanced/BYOC covers scaling node count and machine size via Cloud Console, API, or Terraform. Standard covers adjusting provisioned compute (vCPUs). Basic auto-scales …
Skill Claude CodeCodex
Reviews, audits, and modifies CockroachDB cluster settings. Self-Hosted has full control over all settings and start flags. Advanced/BYOC can modify most SQL-level settings but infrastructure settings are managed by CRL. Standard has limited settings access — session variables are the primary tuning mechanism. Basic…
Skill Claude CodeCodex
Manages planned cluster maintenance across all tiers. Self-Hosted covers node drain procedures for OS patching, hardware changes, and configuration updates. Advanced/BYOC covers maintenance window configuration, patch scheduling, deferral policies, and monitoring during CRL-managed maintenance. Standard and Basic…
Skill Claude CodeCodex
Guides initial CockroachDB cluster provisioning and production deployment. Self-Hosted covers cockroach start/init, Kubernetes deployment (Operator, Helm), hardware sizing, and production configuration. Advanced/BYOC covers Cloud Console, API, and Terraform provisioning with production settings. Standard covers…
Skill Claude CodeCodex
Performs a comprehensive health check of a CockroachDB cluster. Gathers deployment context first, then provides tier-appropriate diagnostics. Self-Hosted uses SQL against node-level system tables and CLI. Advanced/BYOC use Cloud Console and SQL with node visibility. Standard monitors provisioned compute and workload…
Skill Claude CodeCodex
Guides CockroachDB version upgrades with tier-appropriate procedures. Self-Hosted covers manual rolling binary replacement with finalization control. Advanced/BYOC covers Console-initiated major upgrades, maintenance windows for patches, and release channel selection. Standard and Basic upgrades are fully automatic…
Skill Claude CodeCodex
Use when writing, generating, or optimizing SQL for CockroachDB, designing CockroachDB schemas, or when the user asks about CockroachDB-specific SQL patterns, type mappings, and distributed database best practices. Also use when encountering CockroachDB anti-patterns like missing primary keys, sequential ID hotspots…
Skill Claude CodeCodex
Audits a self-hosted CockroachDB cluster against the CIS CockroachDB Benchmark v1.0.0 Level 1 controls. Supports two audit depths — quick automated scans and full CIS audit procedures. Produces a structured PASS/FAIL/MANUAL report covering installation, system hardening, logging, user access, data protection, and…
Skill Claude CodeCodex
Audits the security posture of a CockroachDB cluster (Cloud or self-hosted) across network, authentication, authorization, encryption, audit logging, and backup dimensions. Use when assessing cluster security readiness, preparing for compliance reviews, or investigating security configuration gaps.