Lightning Talk: It’s 10pm, do you know what your proxy is doing? Understanding...
summary
Envoy’s discovery APIs use xDS protocol over ACK/versioned gRPC streams to push CDS/LDS/EDS/RDS updates; Stripe runs this across several thousand nodes with a custom management server (≈5,000 LOC). The protocol includes versioned responses and explicit ACKs, rejects malformed responses (double-listed cluster case), and exposes race conditions when EDS arrives before CDS causing dropped traffic. Using Aggregated Discovery Service (ADS) solves ordering by multiplexing resource types on one stream; Go Control Plane is the recommended reference implementation.
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chapters (6)
- 0:00Intro
- 0:57Bit of terminology!
- 1:32Cluster Discovery Server
- 2:32Cluster Discovery Initial Request
- 4:38Possible Race Conditions
- 6:03Aggregated Discovery (ADS)
