MongoDB is one of the most popular document databases out there, and if you're running it in production, you already know that things can go sideways fast without proper monitoring. Slow queries, replication lag, disk pressure — these problems don't announce themselves politely. You need tools that catch them early. Here's a look at five monitoring tools worth considering in 2026, what they do ...
It’s March 23rd, and yes — I’m still doing every challenge you throw at me.
This week’s challenge is the same deal:
you make me a challenge, and I’ll build it.
I’m not stopping.
Just give me time — I’m doing all of them, one by one.
Come up with a front‑end challenge that I have...
OpenClaw vs 3Commas vs Cryptohopper — three of the most popular crypto bot platforms in 2026, each targeting a completely different type of trader. I've tested all three. This is the honest breakdown: what each actually does, what it costs in reality (not the marketing price), who it's actually for, and which one you...
A crypto AI agent stack that costs $0 per month sounds like a fantasy in 2026, when every tool wants a subscription. But it's completely real — and I'm running one right now. This guide breaks down exactly which tools I use, why they're free, and how to string them together into an agent that monitors markets, sends alerts...
Problem
Remove Duplicates in Sorted Linked List
You are given a sorted singly linked list.
Your task is to remove duplicate nodes, keeping only one occurrence of each element.
The solution should be done in-place with O(1) extra s...
One of the most effective strategies for building scalable web applications is implementing a robust caching system. By storing frequently accessed data in memory, you can dramatically reduce the load on your database and improve response times. Consider using a distributed cache like Redis or Memcached to store session data, user preferences, and even entire rendered HTML pages for anonymous u...