Lambda is slow on the first request, fast after
Cold start is the time to spin up a fresh sandbox. Optimize or accept.
Try this first
- 1Shrink deployment package, fewer deps = faster
- 2Avoid heavy init code, lazy-load what you can
- 3For latency-critical: Provisioned Concurrency, but it costs
- 4Consider ARM (Graviton2) runtime, often faster and cheaper
When to bring us in
If you need sub-100ms, Lambda may simply be wrong, look at App Runner or ECS Fargate.
See also
- Everyone logs in with the AWS root accountRoot is for emergencies and billing. Day-to-day work belongs in IAM users or SSO.
- Every developer has AdministratorAccessAdministratorAccess everywhere is convenient now, painful later. Start with role-based policies.
- Everyone has individual IAM users with their own passwordIdentity Center (formerly AWS SSO) links to your IdP and issues temporary credentials per session.
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