Idempotency Keys in REST APIs: Safe Retries & Webhooks Explained
Learn how idempotency keys prevent duplicate side effects in REST APIs and webhooks. Includes safe retry design, deduplication, concurrency, and code.
Incoming Webhook Monitoring: Retries and Security
Monitor incoming webhook receipt, signature verification, queue age, processing outcomes, duplicates and provider retries without exposing secrets.
Response Body Validation: Detect False 200 OK
Validate required HTML, JSON fields, schemas and negative error markers so status-only monitors catch false-green pages, APIs and login redirects.
API Rate Limit Monitoring: 429 Errors and Retries
Monitor API quotas and 429 responses, parse Retry-After correctly, separate client bursts from provider throttling, and alert before integrations stall.
LLM API Monitoring: OpenAI, Anthropic & Gemini Reliability
Monitor LLM APIs with provider-specific canaries, latency and rate-limit telemetry, output validation, deprecation tracking, and tested failover.
Health Check Endpoint Design: /healthz vs /livez vs /readyz
Design reliable /healthz, /livez, and /readyz endpoints. Learn liveness vs readiness, Kubernetes probes, dependency checks, and alerting.
Mobile Backend Monitoring: API, Auth, Sync, Push, and Version Health
Monitor mobile API contracts, auth refresh, configuration, sync, APNs and FCM delivery, media, TLS, regions, and supported app versions.
REST API Monitoring: Endpoints, Auth, Errors, Latency
Monitor REST endpoints with method-aware status checks, authentication, schema assertions, latency, rate limits and safe state-changing canaries.
Authenticated API Monitoring: Tokens and Headers
Monitor protected APIs with least-privilege credentials, bearer tokens and custom headers while handling rotation, redaction and meaningful assertions safely.
Webhook Monitoring: Delivery, Retries, Failures
Monitor webhook delivery and processing with attempt status, retries, signatures, queue age, reconciliation and dead-letter recovery.