The Black Hole of Linux
Learn about the /dev/null file, the black hole of Linux. We will go over a practical example and how it is used to mask services.
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Tech Blog Posts 💡Page 4
Explore our latest thoughts, tutorials, and insights on technology and development
The Default Docker User Has a Lot of Power
Most Docker containers run processes as the root user, leading to increased security risks. See a demonstration and learn what can be done to reduce risk.
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Be Aware of Max Connections!
If you are using a connection pool to connect to a Postgres database, and dynamically scale your application, make sure that the total number of connections from all sources does not exceed Postgres's max_connections.
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Maximizing Node's Performance with Threads
Learn how to maximize the performance of a Node application using threads. We will discuss how Node uses a threadpool, the libuv C library, and Node's single threaded nature.
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Don't Give Your Docker Container Host Privileges
You should not give your Docker containers host privileges. Learn why and better alternatives including adding specific Docker capabilities and devices.
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A Handy Postgres View for Optimization
Learn about a Postgres view that can help optimize your database. We will also go over indexes and how they are used to find rows efficiently.
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Is Node Bad at Heavy Computations?
Learn if Node is the right choice for running heavy computations. We will learn about Node's architecture, child processes, worker threads, and C++ addons.
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Your Multi-Stage Builds Could Be Broken
Multi-stage Docker builds reduce image size and improve security by separating build and runtime environments. However, they need to be implemented correctly!
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Don't Expose All Your Docker Containers
Not all Docker containers need to be exposed to the host machine. Learn why that is and how to protect containers from the outside world using Docker Compose.
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A Common Promise Chain Mistake
Just because you don't explicitly return something in a Promise chain doesn't mean the chain will break.
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