Function retry

retry<T>(label: string, op: () => Promise<T>, cfg?: RetryConfig): Promise<T>

Retry an async operation with backoff/jitter.

Type Parameters

T

Parameters

label: string
Unique label for telemetry (e.g., "GET /api/items")
op: () => Promise<T>
Function returning a Promise
Optionalcfg: RetryConfig
RetryConfig

Returns Promise<T>

The resolved value from the operation, or throws after all retries fail.

Example

// Retry GET request up to 5 times, with exponential backoff starting at 300ms
const data = await retry("GET /api/patients", async () => {
  const res = await fetch("/api/patients");
  if (!res.ok) throw new Error(`Status ${res.status}`);
  return res.json();
}, {
  retries: 5,
  baseMs: 300,
  jitter: true,
  report: true // enable DataDog telemetry at default 10% sampling
});