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
TECHNOLOGY / KNOWLEDGE / PRACTICE
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Practical guides to AI, Python, Git, SQL, Web/API, SAP/ERP and mathematical models, with explanations, code examples, sources and limitations.
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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
curl works, fetch fails: diagnosing CORS and preflight
Distinguish response access from request sending, inspect an OPTIONS preflight and configure explicit origins for credentialed browser requests.
HTTP / CORS / fetch / API / Troubleshooting