A few years ago I solved 200 LeetCode problems and still froze on Mediums I hadn't seen. The breakthrough wasn't another hundred problems. It was a different loop. A problem asks for the longest substring with at most K distinct characters. You've solved sliding window before. Maximum sum subarray of size K, done. Longest substring without repeating characters, done. This third one stalls you. Twe
Some time ago, I was building a chat application using AWS Websocket API gateway. Things were going smoothly. I created a WebSocket API Gateway, added $connect, $disconnect, and sendMessage/addGroup routes. From the frontend (React) side, everything was fire-and-forget. You send a message, and the onMessageHandler takes care of it 💪🏼 But then a new requirement of uploading files using S3 signed
How to Avoid Losses in a Bear Market: A Crypto Trader's Survival Guide Here's a number most traders don't want to hear: over the last 51 days of continuous market monitoring, 93% of the time the crypto market was classified as bearish. Not choppy. Not neutral. Bearish. That data comes from 10,000+ market snapshots taken every five minutes by the Regime API, scoring 10 weighted signals across fun