Tiddisinja sistema kbira tal-iskala tinvolvi li tgħaqqad ħafna kunċetti — ttrattaġġ tal-iskala massiva, għażla tal-arkitettura xierqa, databases, caching, u ġestjoni tal-kompromessi. L-użu ta' eżempju konkret (feed ta' aħbar tal-midja soċjali) juri kif il-partijiet kollha jigħu flimkien.
Eżempju: feed ta' aħbar tal-midja soċjali
Requirements: millions of users; post content; see a feed of followed users' posts;
read-HEAVY (far more feed views than posts); low latency; high availability.
High-level components:
→ CLIENTS → LOAD BALANCER → APPLICATION servers (stateless, horizontally scaled)
→ DATABASES → user/post data (sharded); a graph of follows
→ CACHING (Redis) → hot feeds, posts, user data (crucial for read-heavy load)
→ CDN → media (images/videos)
→ MESSAGE QUEUES → async work (fan-out, notifications)
