Infrastructure
How Telegram Talks to a Billion People at Once (Without Falling Over)
Telegram moves billions of messages a day across a custom-built backend that skips most of the standard cloud playbook – no managed databases, no conventional load balancers, just a purpose-built protocol and a web of data centres designed so no single failure takes the system down. This piece breaks down exactly how that architecture works, from home data centres and message routing to why a famously small engineering team has been enough to keep it all running.
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