Method getTopChartVariants

server/modules/runtimeCache.js:561–579

(chartId, limit = 5)

  }

  async getTopChartVariants(chartId, limit = 5) {
    if (!chartId) return [];

    const variantHashes = await this.store.zrevrange(this.usageKey(chartId), 0, Math.max(0, limit - 1));
    if (!variantHashes || variantHashes.length === 0) {
      return [];
    }

    return Promise.all(variantHashes.map(async (variantHash) => {
      const rawMetadata = await this.store.hget(this.usageMetaKey(chartId), variantHash);
      if (!rawMetadata) return null;

      try {
        return JSON.parse(rawMetadata);
      } catch (_error) {
        return null;
      }
    })).then((variants) => variants.filter(Boolean));
  }

  async buildChartVersion(chartId, timezone = "") {
    const chartFingerprint = await db.Chart.findOne({