dev

rfc

• date and time on the internet: timestamps (opens in a new tab)
• http/1.1: status code definitions (opens in a new tab)

http

• 301 redirect - how to create redirects | webconfs.com (opens in a new tab)
• analyse your http response headers (opens in a new tab)
• bulk url http status code, header & redirect checker | httpstatus.io (opens in a new tab)

regular expressions

• regexr: learn, build, & test regex (opens in a new tab)

java

• graalvm native image (opens in a new tab)

tools

• carbon | create and share beautiful images of your source code (opens in a new tab)
• ray.so (opens in a new tab)