Apache Calcite A Foundational Framework for Optimized

What every systems programmer should know about concurrency

Seasoned programmers are familiar with tools like mutexes, semaphores, and condition variables. But what makes them work? How do we write concurrent code when we can’t use them, like when we’re working below the operating system in an embedded environment, or when we can’t block due to hard time constraints? And since your system transforms your code into things you didn’t write, running in orders you never asked for, how do multithreaded programs work at all? Concurrency — especially on modern hardware — is a complicated and unintuitive topic, but let’s try to cover some fundamentals.

Elements of Scale Composing and Scaling Data Platforms

If you can't open it, Elements Of Scale: Composing And Scaling Data Platforms (2015).

How does a relational database work

Everything You Always Wanted to Know About Synchronization but Were Afraid to Ask

What Every Programmer Should Know About Memory

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.