#restapi

Email verification looks like a simple endpoint: accept an address, create a token, send a message,...

A backend pattern for isolating authentication test mailboxes with PostgreSQL ownership, bounded cleanup, and repeatable REST API runs.

What Is REST API? REST API is a popular approach for building communication between...

In high-throughput systems, backend latency rarely stems from JVM CPU bottlenecks. In over 80% of...

Email verification is often treated as a small side effect of a signup request. In a real backend, it...

A practical design for idempotent email verification endpoints using PostgreSQL, request keys, token rotation, and observable API responses.

Every API in this series so far has been designed with humans in mind. REST responses are readable...

REST, GraphQL, WebSockets — all three have one thing in common. The client initiates. You open the...

A backend design for replay-safe email verification using REST APIs, PostgreSQL attempt records, leases, and deterministic cleanup.

REST APIs are an important part of modern web development because they allow different applications...

Every API type you've learned so far follows the same pattern: the client asks, the server answers....

Salesforce applications often need to exchange data with external systems. Apex callouts allow...