Netflix's Pushy: Evolution of Scalable WebSocket Platform That Handles 100Ms Concurrent Connections
Briefly

"Over the last five years, Pushy has gone from tens of millions of concurrent connections to hundreds of millions of concurrent connections, and it regularly reaches 300,000 messages sent per second."
"To support this growth, we've revisited Pushy's past assumptions and design decisions with an eye towards both Pushy's future role and future stability."
"The team tackled Pushy's scalability by switching to a more performant and cost-effective instance type and increasing the average number of concurrent connections per node from 60,000 to 200,000."
Read at InfoQ
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