Method getBufferSize

packages/db/src/buffers/base-buffer.ts:275–277

* Ground-truth size of the buffer (LLEN of the Redis list). O(1). The * previous implementation kept a shadow counter to "avoid" LLEN — but * LLEN and GET are both O(1) single-roundtrip ops in Redis, so the * counter was free complexity that silently drifted (see incident * 2026-05-20).

()

   * 2026-05-20). Always use this.
   */
  async getBufferSize(): Promise<number> {
    return await getRedisCache().llen(this.getRedisListKey());
  }

  /**
   * Time the body of an `add()` call. Subclasses wrap their work with this