Instagram System Design
Instagram System Design
Designing a system like Instagram involves a complex network of components and services.
Here’s an overview of Instagram’s system:
Client Interaction: Users engage through mobile or web apps.
Load Balancer: Distributes requests evenly to API gateways.
API Gateways: Routes requests to microservices.
Write Operations: Directs uploads and comments to the App Server, which validates requests, writes data, and handles video processing.
Feed Generation Service:Generates and updates user feeds.
Read Operations: Routes read operations, like viewing feeds, to relevant services.
Metadata Database: Stores user profiles and post data.
Caching Mechanism: Utilises Redis or Memcached for data caching, reducing latency and database load.
Search Service (Elasticsearch): Efficiently performs user and content searches.
Blob Storage: Stores user-uploaded media (images, videos).
CDN (Content Delivery Network): Caches and serves static content with low latency.
Video Processing: Processes user-uploaded videos (transcoding, resizing, thumbnails).
Notifications: Notifies users of likes, comments, and interactions.
Instagram’s architecture may involve additional services for monitoring, analytics, backup, recovery, scalability, performance, and reliability.
