Etsy Payment system reached the point where vertical scale won’t work anymore. They used biggest instance on GCP. They migrated this to Vitess. They have to change schema and update data model and roll out in 2 phases and share with us how they do in this article

As CPU cores become both faster and more numerous, the limiting factor for most programs is memory access. Hardware designers have come up with ever more sophisticated memory handling and acceleration techniques–such as CPU caches–but these cannot work optimally without some help from the programmer. Unfortunately, neither the structure nor the cost of using the memory subsystem of a computer or the caches on CPUs is well understood by most programmers. This paper explains the structure of memory subsystems in use on modern commodity hardware, illustrating why CPU caches were developed, how they work, and what programs should do to achieve optimal performance by utilizing them.

DataDog handle massive amount of data so they build a system to redesign how they ingest and store log call Husky. Husky’s architecture decouples storage and compute so that they can be scaled independently. In this post we learn how Husky organized its data and establish consensus.

we could build a simple Virtual Machine (VM) with no dynamic linking and a small set of minimalistic APIs that remain stable over time, it would make it a lot easier to build software without worrying about becoming randomly broken by changing APIs or dependencies. The author build such a VM call UVM and share with us here.

Consistent hashing is a technique to associate a resource with a set a nodes evenly, but also support adding new nodes into system without reallocating resource around.

discussed how roles (users and groups) are created and managed in PostgreSQL Depending on your background with permissions, particularly in other database products, some of those nuances in how permissions work may have been surprising.

I always wonder how those walk through, fly through or 3d object model are being build. This is an end to end tutorial to show you the entire process of implement JS, CSS code and build the animation

In JavaScript, its very easy to create object with no extra syntax: just do a {foo: 1}. But turning out there is another better and fast way: const o = new Map();o.set('foo', 1). Map is optimize for adding/removing key frequently

A walk-through of multiple tools that can be very useful when audit and analyse a network system. This is the step call analyze footprint of any system to find relevant components. By running these tools on your own network can yield interesting result sometimes.

A very good way to learn and build reliable distributed system. The famous Kyle of Jepsen team up with fly.io to build a challenge, where you implement the system to communicate with a pre-build server follow a protocol. Your program needs to communicate the right way to pass the challenge.