How to Prevent Chrome Browser from Caching 301 Redirects

Avoiding Chrome's 301 redirect cache trap in short-URL services by using 302 or 307 instead.

Checking HTTP/1.1, HTTP/2 with curl --head --verbose Command

How to use curl --head --verbose to confirm whether a URL responds over HTTP/1.1 or HTTP/2, with sample output.

[cURL] GET/POST/PUT/DELETE

A short memo on using cURL's -X option to send GET / POST / PUT / DELETE requests.

How to Save Cookies and Maintain Sessions with cURL

How to keep a login session alive with curl by saving cookies with -c and reusing them with -b.

Specify UserAgent with curl command

How to set the User-Agent header with curl's -H option, using the Facebook crawler as an example.

[HTTP] referer and referrer and Typo

A quick note on why the HTTP header is spelled 'referer' — a historical typo preserved in the spec.

[HTTP] Status code when returning errors for non-xhr requests

A note on choosing HTTP 400 Bad Request when rejecting non-xhr requests as errors.

Collection of Helpful Articles for Understanding and Implementing Idempotence in Design

A curated reading list on idempotence — concept, design patterns, REST/HTTP, and shell scripting.