Backend Engineering Basics: Structure a Service Properly
Backend Application Engineering: leave with a layered service (routes, services, repositories) with validation and consistent errors.
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What this session would cover
Proposed outline — the mentor finalises the agenda once this topic is scheduled.
- 1Why backend application engineering matters — the common problem: Business logic, SQL and HTTP handling are mixed together, making changes risky.
- 2Core concepts in plain language: Request lifecycles, routing, middleware, controllers, services, repositories
- 3Going further: validation, serialization, configuration, dependency injection, connection pooling, background processing
- 4Framework walkthrough: OpenAPI Contracts, Twelve-Factor App, OAuth 2.0 / OpenID Connect
- 5Practical workflow, built live: A layered service (routes, services, repositories) with validation and consistent errors.
- 6How to measure it: Error rate, p95 latency, Contract-test pass rate, Duplicate-processing incidents
- 7An illustrative case (a fictional example, not a client result), then live Q&A on your own situation
Who it's for
- • Students and freshers entering tech
- • Working developers and engineers
- • Tech leads and architects
You'd leave with
- A layered service (routes, services, repositories) with validation and consistent errors.
- A working understanding of OpenAPI Contracts and Twelve-Factor App
- A short list of measures to track: Error rate, p95 latency, Contract-test pass rate
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