1575 articles
Manage Terraform state safely with S3+DynamoDB, organize code with versioned modules, use Terragrunt to eliminate duplication, and enforce quality with pre-commit hooks and policy checks.
Use TestContainers to run real PostgreSQL, Redis, and Kafka in tests. Isolate data per test, parallelize safely, and catch integration bugs before production.
Twilio has an outage. Every user trying to log in can''t receive their OTP. Your entire auth flow is blocked by a third-party service you don''t control. Fallbacks, secondary providers, and graceful degradation are the only way to maintain availability.
You wrote perfectly async Node.js code — no blocking I/O, no synchronous loops. Yet under load, responses stall and CPU pegs. The culprit is Node.js''s hidden libuv thread pool being exhausted by crypto, file system, and DNS operations. Here''s what''s really happening.
You restart your service for a hotfix. Within seconds, the new instance is overwhelmed — not by normal traffic, but by a thundering herd of requests that had queued up during the restart. Here''s why it happens and how to protect your service from its own restart.