What is CRUD? CRUD stands for Create, Read, Update, Delete — the four basic operations that almost every application or service performs on data. Whether you’re developing a web API, managing a database, or building a mobile app, CRUD operations are at the core of how data is handled. Let’s break it down in simple terms: Create – Add a new entry to the system Read – Retrieve data from the system Update – Modify existing data Delete – Remove data from the system These operations map directly to HTTP methods in RESTful APIs: ...

What is REST? REST (Representational State Transfer) is an architectural style for designing networked applications. It’s not a protocol or a standard, but rather a set of principles that use HTTP to perform CRUD operations (Create, Read, Update, Delete) on resources. Why REST? REST became popular because it’s simple, stateless, and leverages existing HTTP methods like GET, POST, PUT, DELETE. Think of REST like a restaurant: You (client) place an order (request) The kitchen (server) prepares the food (response) You don’t need to know how they made it; you just get the result Core Principles Stateless: Each request contains all necessary information. Server doesn’t store session. Client-Server: Decouples frontend and backend. Cacheable: Improves performance by caching responses. Uniform Interface: Resources are accessed via standard URIs and HTTP methods. Layered System: Architecture can have multiple layers (like proxies, gateways). HTTP Methods Method Action GET Read POST Create PUT Update DELETE Delete Example GET /users/123 This fetches user with ID 123. ...

Site Reliability Engineering (SRE) may sound like a fancy job title, but it’s actually one of the most practical and important roles in modern infrastructure and software teams. What is an SRE? SRE stands for Site Reliability Engineer. In simple terms, an SRE ensures that systems are reliable, scalable, and efficient. The concept was born at Google, where software engineers were tasked with running production systems using software engineering principles. ...

Who is a DevOps Engineer? If you’ve spent any time in the world of software development or operations, you’ve probably heard the term DevOps thrown around. But what does it actually mean to be a DevOps engineer? Let’s break it down in simple terms. Dev + Ops = Collaboration At its core, DevOps is a cultural and technical movement that aims to bridge the gap between development (Dev) and operations (Ops). Traditionally, developers wrote code and handed it off to system administrators to deploy and maintain it. This often led to misunderstandings, delays, and finger-pointing when something broke. ...

Site Reliability Engineering (SRE) is not just about “keeping things up” — it’s about building systems that are reliable and understandable. At the heart of this idea lies a simple but powerful toolset: the four golden signals. Let’s break them down in human terms — no jargon, just practical insights. 🚨 What Are the Golden Signals? Golden signals are the four key metrics that Google’s SRE team recommends tracking for any user-facing service: ...