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84. WebSocket Subscriptions and Geyser Plugins

Real-time streaming and validator data streaming.

1 min read2 questionsup to 50 XPtopic 84/100

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Clients stream account updates via standard WebSocket RPC subscriptions (`accountSubscribe`, `logsSubscribe`). High-performance indexers use validator Geyser plugins to stream raw account changes via gRPC (e.g. Yellowstone Geyser).

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1. Read the explanation once end to end, skipping the code.
2. Re-read the code snippets and say out loud what each line does.
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Check your understanding

1. What is a Solana Geyser Plugin?
A validator plugin that streams real-time account updates and transactions directly to external databases/gRPCA web browser extensionA smart contractA mining tool
2. Why do high-frequency trading bots and indexers prefer Yellowstone gRPC Geyser over standard WebSockets?
Sub-millisecond streaming directly from validator pipeline without RPC rate limitsIt is freeIt runs on EVMIt requires no code

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