ETag and Conditional Requests: Revalidation and Safe Updates
Use If-None-Match to revalidate cached responses and If-Match to avoid overwriting a newer representation.
HTTP / ETag / Caching
TECHNOLOGY / KNOWLEDGE / PRACTICE
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Understanding Cache-Control Headers for Public and Personalized Responses
This document explains the Cache-Control HTTP headers 'no-store', 'no-cache', and 'private', detailing their distinctions in controlling caching behavior for public and personalized responses, along with browser diagnostics and common pitfalls.
Cache-Control / HTTP / Caching / Web Development / Privacy / Security / Browser / CDN
Bound HTTP retries with a deadline and handle unknown outcomes
Separate a request timeout from the total retry budget, interpret Retry-After, and avoid duplicating writes when the server outcome is unknown.
HTTP / Retries / Timeouts / Idempotency
401, 403, 429 or 503: where to start with an API error
Separate authentication, permissions, rate limits and service availability before retrying.
HTTP / API / Troubleshooting
API Pagination: Offset vs. Cursor for Changing Data
Understand the differences between offset-based and cursor-based pagination and when to use each, especially when dealing with frequently changing datasets.
api / pagination / rest / offset / cursor / data consistency / web development