Polyglot Protocols: gRPC, GraphQL & FLASH Wire

FLASH DB provides dedicated protocol engines for low-latency polyglot microservices (gRPC), flexible web query APIs (GraphQL), and the native FLASH Wire binary protocol.

For the native TCP wire protocol (BSON, port 6744), see FLASH Wire Protocol.

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1. High-Throughput Binary Protocol / gRPC (FlashGRPCServer)

Runs a dedicated binary TCP socket listener with length-prefixed framing. Inserts must be sealed client envelopes; finds accept trapdoor envelopes only. The daemon never decrypts.

import { FlashDatabase, FlashGRPCServer } from "flash-zk";

const db = new FlashDatabase("rpc_db", { storagePath: "./data" });
const grpcServer = new FlashGRPCServer(db, {
  port: 6743,
  authKey: "cluster-secret",
});

await grpcServer.start();
console.log("⚡ gRPC binary service running on port 6743");

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2. Zero-Knowledge GraphQL Engine (FlashGraphQL)

Execute GraphQL-shaped queries through FlashClient. The engine returns sealed records; the client decrypts and projects fields.

import { FlashClient, FlashGraphQL } from "flash-zk";

const client = new FlashClient({
  storagePath: "./data",
});
const gql = new FlashGraphQL(client);

const response = await gql.execute(`
  {
    users(limit: 5) {
      name
      email
      balance
    }
  }
`);

console.log(response.data.users);