Type Alias: CacheTTLFactory

type CacheTTLFactory = (ctx) => Promise<number> | number;

Defined in: packages/cache/src/decorators/cache-ttl.decorator.ts:24

Factory function type for generating TTL (time-to-live) values dynamically.

This function receives the execution context and returns a TTL in milliseconds. Can be async for cases where TTL needs to be fetched from external sources.

Parameters

Parameter	Type
ctx	ExecutionContext

Returns

Promise<number> | number

The TTL in milliseconds, or a Promise resolving to TTL.

Example

const ttlFactory: CacheTTLFactory = (ctx) => {
  const request = ctx.switchToHttp().getRequest();
  // Premium users get longer cache
  return request.user.isPremium ? 3600000 : 60000;
};