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Articles tagged with #backend
Introduction to SSE Server-Sent Events (SSE) let servers send real-time updates to clients over one HTTP connection. Unlike WebSockets, SSE only goes from server to client and uses standard HTTP, making it easier to set up and more compatible with cu...
Understanding Service Reliability When a business offers a service, like a website or API, it often makes promises to its customers. These promises are called Service Level Agreements (SLAs). An SLA might say "Our website will be available 99.9% of t...
Guide to file uploads The Old Way Back then, file uploads were simple. Files went straight to your server. This caused problems: Server gets overwhelmed Security risks High bandwidth costs Timeouts with big files Pre-signed URLs: A Better Way I...
Webhooks are like getting a text message. When something changes, a system sends you an update. But getting these updates right is tricky. Let's see how to handle them properly. First, you need an endpoint to receive updates (the other system e.g. St...
Event Sourcing turns events into the source of truth. A bank account is the classic example. Instead of just storing the balance: // Traditional approach (current state) { "accountId": "123", "balance": 1000 } // Event Sourcing (history of chang...
Core Principles Design APIs that are: Easy to read and work with Hard to misuse Complete and concise Naming and URL Structure Resource Naming Use nouns to represent resources, not verbs Good: /items, /employees Bad: /createItems, /getEmplo...
