Jesús Espino ✓

[image] New article: Go's Memory Allocator 🚀 How Go manages heap memory for thousands of goroutines. 64MB arenas → 8KB pages → spans → fixed-size slots. A three-level cache where the fast path is completely lock-free. 👉 #golang #go #runtime #programming

[image] New article: Inside Go's Runtime Scheduler 🚀 How Go runs millions of goroutines on a few OS threads. The GMP model, work stealing, spinning threads, and context switches that take only 50-100 nanoseconds (10-40x faster than OS threads). 👉 #golang

[image] "The select Statement" is a lighter entry in the Go runtime series, but it's one of my favorites because it shows something I think is genuinely beautiful: how the compiler and the runtime collaborate. A `select` looks like a switch, but underneath it's really two features: The

[image] I just published "Stacktraces", the next piece in my "Understanding the Go Runtime" series, and it answers a question we all take for granted: how does the runtime know the entire call chain when your program panics? The trace is built in two phases, and once you see them the

[image] New article: The Go System Monitor How sysmon, a thread with no P, keeps the runtime fair. It preempts goroutines, retakes Ps from syscalls, forces GC every 2 minutes, and ensure network poller keeps ticking. The Go's watchdog #golang #go #runtime

[image] New article: Inside Go's Garbage Collector 🧹 How Go reclaims memory without stopping your program. Tri-color marking, write barriers, span-based batching, SIMD-accelerated scanning, and drafting goroutines into helping GC when they allocate too fast. 👉