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@jboner
jboner / latency.txt
Last active July 30, 2024 02:24
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
@chrisjenx
chrisjenx / .gitignore
Created August 2, 2013 09:57
Java / Gradle / IDEA / Eclipse gitignore
# built application files
*.apk
*.ap_
# files for the dex VM
*.dex
# Java class files
*.class
@vitorbritto
vitorbritto / rm_mysql.md
Last active July 5, 2024 17:22
Remove MySQL completely from Mac OSX

Remove MySQL completely

  1. Open the Terminal

  2. Use mysqldump to backup your databases

  3. Check for MySQL processes with: ps -ax | grep mysql

  4. Stop and kill any MySQL processes

  5. Analyze MySQL on HomeBrew:

    brew remove mysql
    
@cmgiven
cmgiven / .block
Last active December 22, 2018 14:24
Brushable Scatterplot/Choropleth
license: mit
height: 350
@msmfsd
msmfsd / es7-async-await.js
Last active February 4, 2024 17:38
Javascript fetch JSON with ES7 Async Await
// Async/Await requirements: Latest Chrome/FF browser or Babel: https://babeljs.io/docs/plugins/transform-async-to-generator/
// Fetch requirements: Latest Chrome/FF browser or Github fetch polyfill: https://github.com/github/fetch
// async function
async function fetchAsync () {
// await response of fetch call
let response = await fetch('https://api.github.com');
// only proceed once promise is resolved
let data = await response.json();
// only proceed once second promise is resolved
@Godofbrowser
Godofbrowser / axios.refresh_token.1.js
Last active July 8, 2024 15:43 — forked from culttm/axios.refresh_token.js
Axios interceptor for refresh token when you have multiple parallel requests. Demo implementation: https://github.com/Godofbrowser/axios-refresh-multiple-request
// for multiple requests
let isRefreshing = false;
let failedQueue = [];
const processQueue = (error, token = null) => {
failedQueue.forEach(prom => {
if (error) {
prom.reject(error);
} else {
prom.resolve(token);