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Ankit Singh ank-it

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@vasanthk
vasanthk / System Design.md
Last active May 9, 2026 02:37
System Design Cheatsheet

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?
@perrygeo
perrygeo / base64_padding.md
Last active December 9, 2025 17:50
Avoiding TypeError: Incorrect padding with Python's base64 encoding

Avoiding padding errors with Python's base64 encoding

>>> import base64
>>> data = '{"u": "test"}'
>>> code = base64.b64encode(data)
>>> code
'eyJ1IjogInRlc3QifQ=='
@adon-at-work
adon-at-work / multer-to-s3.js
Last active April 3, 2023 18:10
Sample File Upload From Multer to S3
var AWS = require('aws-sdk'),
fs = require('fs');
// http://docs.aws.amazon.com/AWSJavaScriptSDK/guide/node-configuring.html#Credentials_from_Disk
AWS.config.loadFromPath('./aws-config.json');
// assume you already have the S3 Bucket created, and it is called ierg4210-shopxx-photos
var photoBucket = new AWS.S3({params: {Bucket: 'ierg4210-shopxx-photos'}});
function uploadToS3(file, destFileName, callback) {
@LeCoupa
LeCoupa / nodejs-cheatsheet.js
Last active May 7, 2026 15:24
Complete Node.js CheatSheet --> UPDATED VERSION --> https://github.com/LeCoupa/awesome-cheatsheets
/* *******************************************************************************************
* THE UPDATED VERSION IS AVAILABLE AT
* https://github.com/LeCoupa/awesome-cheatsheets
* ******************************************************************************************* */
// 0. Synopsis.
// http://nodejs.org/api/synopsis.html