Can I code Segment?

COPYDon't build a general event-routing platform — for one or two destinations, write directly to each instead: 1. A single tracking function in your app that calls your own database directly, and optionally a second analytics service's API — no routing layer in between, just two direct calls. 2. Basic event schema validation (required fields present, correct types) before storing — a simple validation function, not a governance system. 3. If you need retries, wrap each call in a basic retry-with-backoff, or queue events through an existing lightweight message queue for reliability. That's genuine, working event tracking for a small number of destinations. Out of scope: reliably fanning one event out to a dozen third-party destinations with exactly-once delivery guarantees — a real distributed-systems problem — and their destination catalog of hundreds of pre-built integrations, representing years of partnership work.