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Add read replica support #22

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Merged
herber merged 1 commit into from
Mar 10, 2026
Merged

Add read replica support #22

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3 changes: 3 additions & 0 deletions bun.lock
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1 change: 1 addition & 0 deletions service/package.json
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Original file line number Diff line number Diff line change
Expand Up @@ -57,6 +57,7 @@
"@metorial-services/forge-client": "^1.0.4",
"@prisma/adapter-pg": "^7.2.0",
"@prisma/client": "^7.2.0",
"@prisma/extension-read-replicas": "^0.5.0",
"@sentry/bun": "^10.38.0",
"@sentry/cli": "^3.2.0",
"date-fns": "^4.1.0",
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29 changes: 27 additions & 2 deletions service/src/db.ts
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Original file line number Diff line number Diff line change
@@ -1,10 +1,35 @@
import type { FunctionBayLayer, FunctionBayRuntimeSpec } from '@function-bay/types';
import { PrismaPg } from '@prisma/adapter-pg';
import { readReplicas } from '@prisma/extension-read-replicas';
import { PrismaClient } from '../prisma/generated/client';

let adapter = new PrismaPg({ connectionString: process.env.DATABASE_URL });
let mainAdapter = new PrismaPg({
connectionString: process.env.DATABASE_URL
});

export let db = new PrismaClient({ adapter });
let replicaAdapter = process.env.DATABASE_URL_READER
? new PrismaPg({
connectionString: process.env.DATABASE_URL_READER
})
: undefined;

let replicaClient = replicaAdapter ? new PrismaClient({ adapter: replicaAdapter }) : undefined;

let baseClient = new PrismaClient({
adapter: mainAdapter,
transactionOptions: {
maxWait: 10000,
timeout: 12000
}
});

if (replicaClient) {
baseClient = baseClient.$extends(
readReplicas({ replicas: [replicaClient] })
) as any as PrismaClient;
}

export let db = baseClient;

declare global {
namespace PrismaJson {
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4 changes: 4 additions & 0 deletions service/src/init.ts
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Original file line number Diff line number Diff line change
@@ -1,5 +1,9 @@
if (!process.env.DATABASE_URL) {
process.env.DATABASE_URL = `postgres://${process.env.DATABASE_USERNAME}:${process.env.DATABASE_PASSWORD}@${process.env.DATABASE_HOST}:${process.env.DATABASE_PORT}/${process.env.DATABASE_NAME}?schema=public&sslmode=no-verify&connection_limit=20`;

if (process.env.DATABASE_READER === 'true') {
process.env.DATABASE_URL_READER = `postgres://${process.env.DATABASE_USERNAME}:${process.env.DATABASE_PASSWORD}@${process.env.DATABASE_HOST?.replace('.cluster-', '.cluster-ro-')}:${process.env.DATABASE_PORT}/${process.env.DATABASE_NAME}?schema=public&sslmode=no-verify&connection_limit=20`;
}
}

if (!process.env.REDIS_URL) {
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