Saas Backend Review — Page 3

LLMs need persistent memory layers to function as production agents across multiple sessions.

AI agents need identity, entitlements, and metering unified in one system, not bolted together.

Design your internal APIs for unpredictable clients, not deterministic code.

Fixing agent failures means rearchitecting your backend, not upgrading your model.

How to build a webhook handler that survives retries and disorder.

Ensure billing events process in order to prevent revenue leaks.

Prevent double charges by keying idempotency on business facts, not just event IDs.

Handle duplicate webhooks by separating receipt from processing.

SSE handles one-way server events more efficiently than WebSockets for most real-time SaaS needs.

Webhooks push real-time events; APIs pull data on demand—production systems need both.

Skip the tests that pass and focus on what actually breaks in production.