[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"glossary-cold-start::en":3,"gloss-cluster-cold-start::en":26,"gloss-next-cold-start::en":9},{"slug":4,"category":5,"name":6,"definition":7,"meta_desc":8,"faq":9,"schema_markup":9,"related":10},"cold-start","dev-tools","Cold Start","A cold start is the extra latency you pay the first time a serverless function or container runs after being idle: the platform has to allocate a worker, load your code and dependencies, initialize the runtime, and only then handle the request. Subsequent \"warm\" invocations reuse that environment and respond in milliseconds, but if traffic is spiky or bursty, users keep hitting cold starts. The penalty varies — tens of milliseconds for a lean function, several seconds for a heavy JVM or a large dependency tree — and it stacks up badly in chains where one request fans out to many functions. For SaaS builders on serverless or edge platforms, cold starts are the hidden tax behind \"why is the first request slow?\" complaints. Mitigations include keeping functions small, using provisioned concurrency or warm-up pings, choosing fast-booting runtimes, and moving latency-critical paths to always-on infrastructure. It's a core reason serverless isn't automatically the cheapest or fastest choice.","A cold start is the extra latency when a serverless function runs after idling — the platform must allocate a worker, load your code, and boot the runtime first.",null,[11,14,17,20,23],{"slug":12,"name":13},"api-gateway","API Gateway",{"slug":15,"name":16},"cache","Cache",{"slug":18,"name":19},"edge-function","Edge Function",{"slug":21,"name":22},"load-testing","Load Testing",{"slug":24,"name":25},"serverless","Serverless",[27,31,34,36,39,42,45,48,51,54,57,60],{"slug":28,"category":5,"name":29,"updated_at":30},"agent","Agent","2026-08-24T02:46:36+00:00",{"slug":32,"category":5,"name":33,"updated_at":30},"ai-code-assistant","AI Coding Assistant",{"slug":12,"category":5,"name":13,"updated_at":35},"2026-08-24T02:46:37+00:00",{"slug":37,"category":5,"name":38,"updated_at":35},"api-versioning","API Versioning",{"slug":40,"category":5,"name":41,"updated_at":30},"autonomous-agent","Autonomous Agent",{"slug":43,"category":5,"name":44,"updated_at":35},"blue-green-deployment","Blue-Green Deployment",{"slug":46,"category":5,"name":47,"updated_at":35},"canary-deployment","Canary Deployment",{"slug":49,"category":5,"name":50,"updated_at":35},"chaos-engineering","Chaos Engineering",{"slug":52,"category":5,"name":53,"updated_at":30},"ci-cd","Continuous Integration \u002F Continuous Deployment (CI\u002FCD)",{"slug":55,"category":5,"name":56,"updated_at":35},"circuit-breaker","Circuit Breaker",{"slug":58,"category":5,"name":59,"updated_at":35},"cli","Command-Line Interface (CLI)",{"slug":61,"category":5,"name":62,"updated_at":35},"cloud-development-environment","Cloud Development Environment (CDE)"]