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100,000 Requests. One Go Server. When Does Concurrency Become the Bottleneck?

🚨 The Traffic Spike: Everything Was Fine Until It Wasn't Imagine you've deployed a Go API. It handles user logins, fetches profile data, and returns responses in milliseconds. Everything looks health

lakshaydhoundiyal.hashnode.dev

Harrison GuoOct 12 · 14 min read

Observability and Billing for AI API Calls: A T-Shaped Architecture

Adding AI API calls to an existing backend is where most teams' observability and billing instincts break. The calls look similar to any other RPC — send a JSON request, receive a JSON response. The d

harrisonsec.hashnode.dev

Harrison GuoOct 8 · 8 min read

Use-After-Free Is a Lifetime Bug, Not a C Bug

Use-after-free gets taught as a C problem. The lesson lands as "C lets you touch freed memory, so C is dangerous, so use a safer language." That is true and it is also the wrong lesson, because it hid

harrisonsec.hashnode.dev

Kumar KisalayJan 4 · 6 min read

Building a Hybrid Logical Clock (HLC) from Scratch in Go

Distributed systems force engineers to confront an uncomfortable fact: time is unreliable. On a single machine, time.Now() feels good enough. Across regions, networks, and failure modes, it quickly becomes a source of subtle, expensive bugs. This po...

krisalay.hashnode.dev

Kayode ToluhiJan 2 · 7 min read

From Go to Rust: Part 1 — Getting Started with Setup & Tooling

So I’ve been a Go developer for a while now, and I recently decided to dive into Rust cuz I will definitely need it in my role as a blockchain engineer to write smart contracts. Everyone keeps talking about it, and I figured it’s time to see what all...

fromgotorust.hashnode.dev

Jimmex04Jan 1 · 5 min read

Eighth Break: Control Structures in Go

Hi everyone! this is Jimmy , and this is the eighth article in my series “Breaking Things with Go.” In this series, I document my journey through Jon Bodner’s Second Edition: Learning Go – An Idiomatic Approach to Real-World Go Programming and explor...

jimmexploit.hashnode.dev

PUSARLA SIVAKALKINov 4, 2025 · 5 min read

Day 15 - Env variables in go

Firstly, what are environment variables and why do we use them? Environment variables are similar to the variables we use in our code — they store data that we can access later — but the main difference is they live outside your code. They are part o...

gosprint90.hashnode.dev

Rajesh GurajalaAug 10, 2025 · 11 min read

Interfaces in Go

Intro Interfaces allow you to focus on what a type does rather than how it's built. They can help you write more flexible and reusable code by defining behaviors (like methods) that different types can share. This makes it easy to swap out or update ...

go-lang.hashnode.dev

Rajesh GurajalaAug 8, 2025 · 6 min read

Structs in Golang

Topics to be covered in this article: Structs Nested structs Anonymous structs Nested anonymous structs Embedded structs Struct methods We use structs in Go to group different types of variables together. Structs in Go are often used to represent dat...

go-lang.hashnode.dev

Rajesh GurajalaAug 4, 2025 · 13 min read

Go lang conditionals, functions

Conditionals: if height > 6 { fmt.Println("You are super tall!") } else if height > 4 { fmt.Println("You are tall enough!") } else { fmt.Println("You are not tall enough!") } The Initial Statement of an If Block : An if conditional can h...

go-lang.hashnode.dev

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100,000 Requests. One Go Server. When Does Concurrency Become the Bottleneck?

Observability and Billing for AI API Calls: A T-Shaped Architecture

Use-After-Free Is a Lifetime Bug, Not a C Bug

Building a Hybrid Logical Clock (HLC) from Scratch in Go

From Go to Rust: Part 1 — Getting Started with Setup & Tooling

Eighth Break: Control Structures in Go

Day 15 - Env variables in go

Interfaces in Go

Structs in Golang

Go lang conditionals, functions