Function getCacheInstance

src/cache.ts:71–115

()

}

function getCacheInstance() {
  if (!cacheInstance) {
    let cachePath = '';
    const stores = [];

    if (cacheType === 'disk' && enabled) {
      cachePath =
        getEnvString('PROMPTFOO_CACHE_PATH') || path.join(getConfigDirectoryPath(), 'cache');

      if (!fs.existsSync(cachePath)) {
        logger.info(`Creating cache folder at ${cachePath}.`);
        fs.mkdirSync(cachePath, { recursive: true });
      }

      const newCacheFile = path.join(cachePath, 'cache.json');

      try {
        const store = new KeyvFile({
          filename: newCacheFile,
        });

        const keyv = new Keyv({
          store,
          ttl: getCacheTtlMs(),
        });

        stores.push(keyv);
      } catch (err) {
        logger.warn(
          `[Cache] Failed to initialize disk cache: ${(err as Error).message}. ` +
            `Using memory cache instead.`,
        );
        // Falls through to memory cache
      }
    }

    // Initialize cache (disk if stores array has items, memory otherwise)
    cacheInstance = createCache({
      stores,
      ttl: getCacheTtlMs(),
      refreshThreshold: 0, // Disable background refresh
    });
  }
  return cacheInstance;
}

function getNamespacedCache(namespace: string) {
  const cachedNamespaceInstance = namespacedCacheInstances.get(namespace);