Method writeCacheToDisk

src/node/services/experimentsService.ts:385–411

()

  }

  private async writeCacheToDisk(): Promise<void> {
    try {
      const experiments: ExperimentsCacheFile["experiments"] = {};
      for (const [experimentId, cached] of this.cachedVariants) {
        experiments[experimentId] = {
          value: cached.value,
          fetchedAtMs: cached.fetchedAtMs,
        };
      }

      const overrides: NonNullable<ExperimentsCacheFile["overrides"]> = {};
      for (const [experimentId, enabled] of this.overrides) {
        overrides[experimentId] = enabled;
      }

      const payload: ExperimentsCacheFile = {
        version: CACHE_FILE_VERSION,
        experiments,
        overrides,
      };

      await fs.mkdir(this.muxHome, { recursive: true });
      await writeFileAtomic(this.cacheFilePath, JSON.stringify(payload, null, 2), "utf-8");
    } catch {
      // Ignore cache persistence failures
    }
  }
}