How do I monitor a feed API in production?
Watch slow queries with the MongoDB profiler or your APM. Add indexes as query patterns emerge. Watch the feed endpoint's response time and error rate. Set up alerts for slow responses or high error rates.
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More FAQs in Feed API Roadmap for Node.js: From Basics to Scale
Basic list, offset pagination, filtering, sorting, field selection, .lean(), indexes, exclude current user, exclude already-seen, cursor pagination for scale, caching, rate limiting, and monitoring. Take it one step at a time.
A basic list endpoint. GET /users that returns a list. No pagination yet. Just confirm you can query and return JSON. Then add pagination, filtering, and sorting on top.
When the collection gets large (> 10000 docs) or the client uses infinite scroll. Cursor is faster (uses an index, no scanning of skipped docs) and stable (new items do not cause duplicates or skips).
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