DEPLOYMENT ARCHITECTURES

CHAPTER SUMMARY Host the harness and the model as two independent decisions. Scale with stateless workers, queues, pooling, isolation, and rate-limit sharing. Keep configuration separate from code, secrets in a secrets manager, and environments walled off from each other. Release gradually with monitoring and automatic rollback, and version everything that affects behavior. KEY TERMS REVIEW Architecture: the high-level arrangement of a system. API: a defined way for programs to talk. Self-hosted: run on your own equipment. Container: a packaged, portable bundle of software. Concurrency: many things at once. Queue: a waiting line for work. Secret: a sensitive credential. Environment: a separate copy for a stage such as development, staging, or production. Canary release: gradual exposure to a small slice first. Rollback: returning to the previous version.