dbos-typescript
Guide for building reliable, fault-tolerant TypeScript applications with DBOS durable workflows. Use when adding DBOS to existing TypeScript code, creating workflows and steps, or using queues for concurrency control.
Full skill instructions
Guide for building reliable, fault-tolerant TypeScript applications with DBOS durable workflows.
Reference these guidelines when:
| Priority | Category | Impact | Prefix |
|---|---|---|---|
| 1 | Lifecycle | CRITICAL | lifecycle- |
| 2 | Workflow | CRITICAL | workflow- |
| 3 | Step | HIGH | step- |
| 4 | Queue | HIGH | queue- |
| 5 | Communication | MEDIUM | comm- |
| 6 | Pattern | MEDIUM | pattern- |
| 7 | Testing | LOW-MEDIUM | test- |
| 8 | Client | MEDIUM | client- |
| 9 | Advanced | LOW | advanced- |
Always install the latest version of DBOS:
npm install @dbos-inc/dbos-sdk@latest
A DBOS application MUST configure and launch DBOS before running any workflows:
import { DBOS } from "@dbos-inc/dbos-sdk";
async function main() {
DBOS.setConfig({
name: "my-app",
systemDatabaseUrl: process.env.DBOS_SYSTEM_DATABASE_URL,
});
await DBOS.launch();
await myWorkflow();
}
main().catch(console.log);
Workflows are comprised of steps. Any function performing complex operations or accessing external services must be run as a step using DBOS.runStep:
import { DBOS } from "@dbos-inc/dbos-sdk";
async function fetchData() {
return await fetch("https://api.example.com").then(r => r.json());
}
async function myWorkflowFn() {
const result = await DBOS.runStep(fetchData, { name: "fetchData" });
return result;
}
const myWorkflow = DBOS.registerWorkflow(myWorkflowFn);
DBOS.startWorkflow or queuesRead individual rule files for detailed explanations and examples:
references/lifecycle-config.md
references/workflow-determinism.md
references/queue-concurrency.md
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