Neeraj's Post

Blue tick = database mein read_at column pe timestamp aa gaya. Aur wo timestamp permanent hai. Delete nahi hoga. 💀 WhatsApp ka full message flow: XMPP Protocol → Erlang Server → ACK System → ENUM Status → DB Update → Tick Render Group mein blue tick late aata hai kyunki 100 members = 100 rows. Sabka read_at NULL se timestamp banana padta hai. Save karo — Meta interviews mein ye seedha poochha jaata hai 🔖 Comment mein batao - next kaunsa system? 👇 #WhatsApp #SystemDesign #DatabaseDesign #CodingHindi #YehKaiseBana

• #WhatsApp
• #CodingHindi
• #YehKaiseBana
• #DatabaseDesign
• #SystemDesign

• 11.9K 67
• 3.5M Followers
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• 1.36% Eng. Rate

This post was published on 12th April, 2026 by Neeraj on his Instagram handle "@ezsnippet (Neeraj Walia)". Neeraj has total 3.5M followers on Instagram and has a total of 1.8K post.This post has received 11.9K Likes which are lower than the average likes that Neeraj gets. Neeraj receives an average engagement rate of 1.36% per post on Instagram. This post has received 67 comments which are lower than the average comments that Neeraj gets. Overall the engagement rate for this post was lower than the average for the profile. #WhatsApp #CodingHindi #YehKaiseBana #DatabaseDesign #SystemDesign has been used frequently in this Post.