Ravi Sir's Cards › AWS
WebSocket vs HTTP polling for chat?
What is a VPC: your own private network inside one AWS Region, example ThreeTierVpc 10.0.0.0/16.
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What this card says
What it is
WebSocket keeps a push channel; polling hammers the API and still adds latency.
Why it matters
API Gateway WebSocket routes lifecycle and messages to Lambda.
How / example
wss://…/prod clients; PostToConnection pushes to stored connectionIds.