reynaldichernando

CORS Proxies (Updated 2025)

Free

Proxy (A-Z)	Methods	Status Code	Override Headers	Exposed Headers	Follow Redirect	Timeout	Size Limit	Rate Limit
allorigins	✅ All	❌ (Always 200)	❌	❌	✅	❔	❔	20/min
cloudflare-cors-anywhere	✅ All	✅ Mirror	✅	✅	❌	❔	❔	❔
codetabs	❌ (only GET)	❌ (Always 200)	❌	❌	✅	❔	625KB	5/sec
cors-anywhere (heroku)	✅ All	✅ Mirror	❔	✅	✅ (max. 5)	❔	❔	50/hour

hoishing

Disable Gatekeeper with Configuration Profiles

Starting from macOS 15, sudo spctl --master-disable is no longer supported to disable Gatekeeper.

We need to disbale it with Configuration Profiles.

How

• Create a new configuration profile, an XML file with .mobileconfig extension, refer the sample file in this gist
• replace the UUID with your own, you can use uuidgen in terminal to generate a new one

sjrogers

How To Add "Last Accessed" Column In Calibre

Calibre does not keep track of the last time you opened a book, but your filesystem does. Or at least, it kinda does. Thankfully you can use Calibre template functions and custom columns to make use of this information.

Step 1: Create Template Function

1. Go to Preferences -> Advanced -> Template Functions
2. Select the Function field at the bottom left of the window

vasanthk

System Design Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

Basic Steps

1. Clarify and agree on the scope of the system

• User cases (description of sequences of events that, taken together, lead to a system doing something useful)
  • Who is going to use it?
  • How are they going to use it?

AbhijeetMajumdar

A quadtree is a tree data structure in which each internal node has exactly four children. Quadtrees are most often used to
partition a two-dimensional space by recursively subdividing it into four quadrants or regions. The regions may be square or 
rectangular, or may have arbitrary shapes. 

More on 
https://en.wikipedia.org/wiki/Quadtree

Thanks to Jim for such an excellent visual representation on http://jimkang.com/quadtreevis/