JS Event Loop Explained Simply!
Alright, here’s the breakdown on this cool JavaScript event loop diagram, the heart of how JS handles tasks without freezing your app.
🔵 Call Stack
JS runs functions here in Last In First Out (LIFO) order. last called, first executed, like stacking plates.
🌐 Web APIs
Browser features like
🟠 Macrotask Queue
Bigger tasks like timer callbacks, clicks, or XHR responses wait here to run after the call stack clears
🟡 Microtask Queue
Urgent jobs like promise
🔄 Event Loop
The boss checking if the call stack is empty, then feeding microtasks first, then macrotasks, ensuring smooth async UI updates.
Simply put, JS runs code immediately but pushes async work to helpers and queues. the event loop smartly loads callbacks so your app stays responsive!
Alright, here’s the breakdown on this cool JavaScript event loop diagram, the heart of how JS handles tasks without freezing your app.
🔵 Call Stack
JS runs functions here in Last In First Out (LIFO) order. last called, first executed, like stacking plates.
🌐 Web APIs
Browser features like
setTimeout()
, fetch()
, or DOM
events run asynchronously here so the main thread stays free.🟠 Macrotask Queue
Bigger tasks like timer callbacks, clicks, or XHR responses wait here to run after the call stack clears
🟡 Microtask Queue
Urgent jobs like promise
.then()
callbacks live here and always run before macrotasks, keeping things fast🔄 Event Loop
The boss checking if the call stack is empty, then feeding microtasks first, then macrotasks, ensuring smooth async UI updates.
Simply put, JS runs code immediately but pushes async work to helpers and queues. the event loop smartly loads callbacks so your app stays responsive!
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API Showdown: GraphQL vs. gRPC vs. REST - Which Wins? 🏆
Picking the right API style can be tricky! Here's a breakdown to help you choose:
❇️ GraphQL: Highly flexible. Clients request exactly the data they need. Best for public APIs requiring custom data from various sources. 🧩 (Language-agnostic, Single endpoint, Strong schemas)
❇️ REST: Well-known and simple. Ideal for CRUD-style web apps with structured resources. 🌐 (Established standard, simple to use, caching support)
❇️gRPC: Emphasizes speed and efficiency. Suited for private APIs prioritizing performance and lightweight communication. ⚡️ (Lightweight clients, protocol buffers, open source)
Your choice depends on your specific needs!
Picking the right API style can be tricky! Here's a breakdown to help you choose:
❇️ GraphQL: Highly flexible. Clients request exactly the data they need. Best for public APIs requiring custom data from various sources. 🧩 (Language-agnostic, Single endpoint, Strong schemas)
❇️ REST: Well-known and simple. Ideal for CRUD-style web apps with structured resources. 🌐 (Established standard, simple to use, caching support)
❇️gRPC: Emphasizes speed and efficiency. Suited for private APIs prioritizing performance and lightweight communication. ⚡️ (Lightweight clients, protocol buffers, open source)
Your choice depends on your specific needs!
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⚡ Vite vs Next.js 🍱
These two often get compared — but they solve different problems. Let’s break it down 👇
🔹 Vite
🍳 Think of it like a super-fast stove.
- A build tool + dev server.
- Blazing hot-reload & lightning bundling.
- Framework-agnostic (React, Vue, Svelte, etc.).
- Doesn’t do routing, SSR, or backend.
➡️ Best when you want speed + flexibility.
🔹 Next.js
🍱 Think of it like a restaurant kit.
- A full-stack React framework.
- File-based routing, SSR, SSG, API routes.
- Image optimization, middleware, edge-ready.
- React-only, opinionated but powerful.
➡️ Best when you want “batteries included” React apps.
⚖️ Key Contrast
- Vite = “Fast dev environment, bring your own framework.”
- Next.js = “Full-stack framework with built-in features.”
👉 Rule of thumb:
Use Vite when you want speed & freedom.
Use Next.js when you want structure & production-ready tools.
@web_dev_bds
These two often get compared — but they solve different problems. Let’s break it down 👇
🔹 Vite
🍳 Think of it like a super-fast stove.
- A build tool + dev server.
- Blazing hot-reload & lightning bundling.
- Framework-agnostic (React, Vue, Svelte, etc.).
- Doesn’t do routing, SSR, or backend.
➡️ Best when you want speed + flexibility.
🔹 Next.js
🍱 Think of it like a restaurant kit.
- A full-stack React framework.
- File-based routing, SSR, SSG, API routes.
- Image optimization, middleware, edge-ready.
- React-only, opinionated but powerful.
➡️ Best when you want “batteries included” React apps.
⚖️ Key Contrast
- Vite = “Fast dev environment, bring your own framework.”
- Next.js = “Full-stack framework with built-in features.”
👉 Rule of thumb:
Use Vite when you want speed & freedom.
Use Next.js when you want structure & production-ready tools.
@web_dev_bds