No, you’re not going to code your own Jira

what actually happens when a program opens a file? file operations work identically on an ext4 file (the disk filesystem most Linux distributions use by default), a file in /proc that exists only as kernel memory, and a file on an NFS share on another machine. Same calls, same file descriptor semantics, same close() at the end.

Text editors can be an interesting challenge to program. The types of problems that text editors need to solve can range from trivial to mind-bogglingly difficult. Recently, I have been on something of a spiritual journey to rework some internal data structures in an editor I have been building, specifically the most fundamental data structure to any text editor: the text.

modal.com rebuilt their core sandbox platform from ground up to support run millions of sandboxes concurrently and create ten of thoudsands of sandboxes per second.

This guide is for homelab admins who understand IPv4s well but find setting up IPv6 hard or annoying because things work differently. In some ways, managing an IPv6 network can be simpler than IPv4, one just needs to learn some new concepts and discard some old ones

Database sharding is the best way to scale a Postgres or MySQL database for anything beyond a few terabytes of data. Let’s look at how we go from a small single-node database, to one with a few terabytes spread across four shards, all the way up to one that is sharded across 768 servers and storing a petabyte of data

People kept telling OP that Linux could perform way better than Windows when it comes to FPS, frame pacing and input latency. So he came up with an idea to actuallly measure that.

One of the most valuable things about partitioned tables is pruning - the database’s ability to eliminate entire partitions based on a query predicate. Under conventional wisdom, pruning can only be achieved when querying by the partition key - this makes choosing the right key extremely difficult. However, if your data follows certain patterns, using some clever tricks you can achieve pruning even when filtering by non-partition key columns.

This isn’t about building a production system but more about a PoC and learning. The idea is we de-couple storage from compute, leverage the power of storage, especially CoW(Copy on write) to branching and do cool thing with database similar to PlanetScale.

Border Gateway Protocol (BGP) lacks built-in trust. Resource Public Key Infrastructure (RPKI) addresses that problem by letting address space holders cryptographically authorize which Autonomous System (AS) may originate their prefixes, via Route Origin Authorizations (ROAs) published through a chain of trust anchored at the five Regional Internet Registries (RIRs). But there are also independent operators contributes to this RPKI. In this post, we investigate who operates those small servers and why.

With modern CPUs, avoiding branch mispredictions is a key method for speeding up programs. One of the most effective ways to reduce mispredictions is to simply avoid branches.

Curious exactly what happens when you run a program on your computer? Read this article to learn how multiprocessing works, what system calls really are, how computers manage memory with hardware interrupts, and how Linux loads executables.

It just fun to read Honey pot result to see whats the scan or the threat actors do.