Linux

An abstract representation of data flowing through a kernel interface

Deep Dive into Linux io_uring: Asynchronous I/O Without System Call Overhead

Learn how io_uring redefines asynchronous I/O by removing per-operation syscalls, boosting throughput and reducing latency in modern Linux applications.

A conceptual diagram of gVisor's user-space kernel architecture

Implementing gVisor Sandboxing: A Deep Dive into Linux Kernel Isolation for Containers

gVisor reimagines container isolation by implementing a minimal Linux kernel in userspace, intercepting syscalls to create a secure sandbox without sacrificing performance.

WireGuard tunnel diagram with peer connections

Mastering WireGuard: Modern VPN Protocol Implementation Guide for Network Engineers

Learn how to implement WireGuard VPNs from design to production, with concrete patterns, performance tips, and troubleshooting guidance for network engineers.

Diagram of gVisor's sentry and gofer architecture

Implementing gVisor: Inside the User-Space Kernel That Sandboxes Docker Containers

How gVisor reimplements the Linux kernel in user space to safely sandbox containers, and what the trade-offs look like in real deployments.

Layered diagram of seven Linux namespaces surrounding a containerized process tree.

Inside Linux Namespaces: Unpacking the Kernel Primitives That Power Container Isolation

Containers look like lightweight VMs, but they’re really just processes wrapped in namespaces and cgroups. We unpack mount, PID, network, UTS, IPC, user, and cgroup namespaces, trace how runtimes like containerd wire them together, and explore the failure modes every SRE should know.