Skip to content

Instantly share code, notes, and snippets.

View sergiycheck's full-sized avatar
🏠
Working from home

Serhii sergiycheck

🏠
Working from home
View GitHub Profile
@jboner
jboner / latency.txt
Last active June 18, 2024 20:22
Latency Numbers Every Programmer Should Know
Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference 0.5 ns
Branch mispredict 5 ns
L2 cache reference 7 ns 14x L1 cache
Mutex lock/unlock 25 ns
Main memory reference 100 ns 20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy 3,000 ns 3 us
Send 1K bytes over 1 Gbps network 10,000 ns 10 us
Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD
@YuMS
YuMS / update-git.sh
Created June 29, 2016 09:28
Update git to latest version on Ubuntu
#!/bin/bash
sudo add-apt-repository -y ppa:git-core/ppa
sudo apt-get update
sudo apt-get install git -y
@soulmachine
soulmachine / jwt-expiration.md
Last active June 16, 2024 12:26
How to deal with JWT expiration?

First of all, please note that token expiration and revoking are two different things.

  1. Expiration only happens for web apps, not for native mobile apps, because native apps never expire.
  2. Revoking only happens when (1) uses click the logout button on the website or native Apps;(2) users reset their passwords; (3) users revoke their tokens explicitly in the administration panel.

1. How to hadle JWT expiration

A JWT token that never expires is dangerous if the token is stolen then someone can always access the user's data.

Quoted from JWT RFC: