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Learn how Express 4.16+'s built‑in express.json() middleware handles JSON bodies, why the default 100 KB limit triggers 413 errors, and how to raise the limit safely with security mitigations.
Learn how to configure KrakenJS to reject oversized requests in Express, verify the setup with 413 responses, and recover if you need to adjust the limit or middleware order.
When Express route handlers see req.body as undefined or empty, the cause is usually middleware order, Content-Type mismatch, or payload limits. Learn ordered checks and fixes.
Guide to picking Express body parsers: built‑in JSON/url‑encoded, body‑parser, or raw/text for webhook signatures, with trade‑offs and a validation example.
Decide whether to use Express' built‑in JSON/URL‑encoded middleware or the legacy body‑parser package based on version, dependencies, and parsing needs.
Goal is to bound query string input and enforce safe pagination defaults for large dataset endpoints in Express 4.x and 5.x. Body parser limit configuration caps request body size but does not apply to query string parameters. The default query parser uses qs with a depth limit and no size limit, and Express does not provide a built-in way to cap the number
The objective is to determine how placing the json() middleware before or after a custom body parser influences stream consumption and whether explicit charset handling is required to avoid JSON.parse failures when non‑UTF‑8 payloads are sent. What impact does the middleware ordering have on data availability for subsequent middleware, and which charset vali
express
json
krakenjs
nodejs