What is JSON? Syntax, data types and common mistakes explained
JSON explained in plain language: syntax, the six data types, why APIs use it, the mistakes that break it, and how to read and validate JSON quickly.
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What is a webhook? How webhooks work, with examples and security tips
A webhook is an HTTP callback that notifies your app when an event happens. How webhooks differ from polling, how to verify signatures and handle retries.
Read the guide →API rate limits explained: why you get 429 and how to avoid it
How API rate limits work, what 429 Too Many Requests and Retry-After mean, common limiting algorithms, and how to build clients that stay within limits.
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HTTP status codes explained: 200, 301, 404, 429, 500 and more
What HTTP status codes mean, from 200 and 301 to 404, 429 and 502, how to see them in your browser, and how to fix the most common…
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Symmetric vs asymmetric encryption: what is the difference?
Symmetric encryption uses one shared key, public-key encryption uses a key pair. How each works, why HTTPS combines them, forward secrecy and post-quantum changes.
Read the guide →What are API services? Types, examples and how they work
API services explained: payments, maps, messaging, data, cloud and AI APIs, how integration works, pricing, and how to choose a reliable provider.
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