Messaging App - System Design Interview Question - WhatsApp / WeChat

[@culturedgator]

the quality of content, the simple and effective style and to the point => this channel deserves to go exp()

[@pribeirorib]

High quality technical analysis and to the point! Love it

[@zamoqi]

one of the best and comprehensive system design. Brief and straight to the point. Might Have to refer to this a lot! Appreciate yourwork!

[@vst-name]

Discord switched from Cassandra to SyllaDB, the main drawback of Cassandra is that it has worse performace of reads, i.e. reads are move expensibe than writes due to it's distribution architecture.

[@khushalgandhi5157]

man where r u preparing for system design interviews , lld and hld and where do u read these kind of things

[@vst-name]

@@khushalgandhi5157 with time, you're just starting to get all kind of interesting recommendations on YT =)

[@erickrds]

Hey man, thanks for the video! What do you use to build the db schemas and design drawings?

[@TechPrepYT]

Glad you enjoyed the video! The schemas are created with dbdiagram.io/home

[@AventadorLP1]

If e2e encrypted the notification wouldn’t be able to show cleartext. So either the app would need poll in the background and locally generate the decrypted notification (High usage might get killed early). Or a silent notification will be sent from the APN server which could trigger to fetch the message decrypt and then generate a local notification.

[@kishorsharmashutihar9176]

Discord migrated from cassandra to scylladb

[@dibll]

Is it possible to share slides? I think it would help reiterate the concepts without going over the video again and again. Thanks again for putting out there one of the best system design material.

[@TechPrepYT]

Yes, the written version of the video (with the slide images) will be available on the wesbsite soon!

[@mikhailtrifonov4980]

Thank you for the video, i liked. I have small question, you said "because we have limited the group chat to 150 members, it's ok to maintain separate queue for each user". How limitation related to each user, not clear, what do you mean here

[@peteremad5228]

i really like this video..but i want to know how to learn these things ? what is the topic ( devops maybe) ?

[@daviddoyle7580]

Its all in System Design Interview An Insider's Guide by Alex Xu, i think alot of these videos on youtube are based on chapters from that book

[@mhadi-dev]

Correction: Discord uses ScyllaDB

[@Adamskyization]

Websockets are not lightweight