Choose a boundary with a business purpose
A microservice is useful when a function has a clear responsibility and can be operated independently. Document processing, integration adapters and scheduled data pipelines are examples. Splitting code into many small services is not a goal by itself.
Design the contract first
Specify request and response formats, validation errors, authentication and timeout behavior. A predictable API lets a website, ERP connector or AI workflow use the same capability without depending on the service's internal implementation. Version contracts when incompatible changes are necessary.
Handle background work deliberately
Long-running extraction and synchronization jobs often need a queue, retry policy and status endpoint. Decide how duplicate requests are handled and which errors may be retried. A user should be able to distinguish pending work, a completed result and a failure that needs attention.
Document how the service runs
Include configuration examples without real secrets, health checks, useful logs and a rollback procedure. Evaluate deployment size and operating cost alongside implementation effort. A focused service should make the system easier to maintain, not add an unexplained server dependency.
Start with one useful workflow
Tell us the systems involved, your desired outcome and who will review the result.
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