{
  "id": 9965544,
  "title": "Never create 1-row ClickHouse parts again: The built-in Buffer Manager.",
  "url": "https://urgent.news/2026/09/26/never-create-1-row-clickhouse-parts-again-the-built-in-buffer-manager",
  "topic": "tech",
  "section": "Tech",
  "published": "2026-09-26T11:07:50.000Z",
  "source": {
    "name": "Dev.to",
    "slug": "dev-to",
    "url": "https://dev.to/william_rodriguez_65a5898/never-create-1-row-clickhouse-parts-again-the-built-in-buffer-manager-1g7e"
  },
  "original_language": "en",
  "account": "Day 03 of the WClickHouse Open-Source Engineering Series reveals a solution to eliminate the need for creating 1-row ClickHouse parts. WClickHouse, an open-source library, introduces a built-in Buffer Manager that allows for high-throughput streaming writes without the need for external Redis clusters or Celery workers.\n\nThe pain points faced by microservices requiring real-time event processing include manually setting up Redis buffers, Celery flush workers, and the risk of accidentally crashing ClickHouse clusters with high-frequency single inserts. WClickHouse addresses these issues by enabling automatic buffering for high-throughput streams.\n\nTo implement WClickHouse, users simply need to import the library and initialize an instance with telemetry, database configuration, buffering enabled, and a specified buffer size. Events are then inserted into the buffer, which is stored in RAM and automatically flushed to ClickHouse when the buffer reaches its size limit. This threshold auto-flush ensures optimal performance without the need for additional infrastructure.\n\nThe benefits of this architecture include the elimination of extra infrastructure requirements such as Redis, Kafka, or queue brokers. The built-in Buffer Manager provides a zero-increment solution that reduces complexity and cost while maintaining performance. WClickHouse has been thoroughly tested and verified against live ClickHouse server instances, with 95%+ test coverage, and is compatible with Python 3.9 through 3.14, utilizing Apache Arrow and Pydantic v2.\n\nFor those interested in learning more, WClickHouse can be found on GitHub at https://github.com/wisrovi/wclickhouse and on PyPI at https://pypi.org/project/wclickhouse. The library was created by William Steve Rodríguez Villamizar, known as Wisrovi.",
  "summary": "Day 03 of the WClickHouse Open-Source Engineering Series. You don't need a Redis cluster just to protect ClickHouse from single-event streaming writes. WClickHouse has a built-in Buffer Manager. The Pain Points We Faced Microservices needing to write real-time events as they happen Manually setting up Redis buffers and Celery flush workers just to feed ClickHouse Accidentally crashing ClickHouse…",
  "key_points": [],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 2,
    "also_reported_by": [
      {
        "outlet": "Dev.to",
        "title": "Nunca más crees partes de 1 fila en ClickHouse: Buffer Manager integrado.",
        "url": "https://urgent.news/2026/09/26/nunca-mas-crees-partes-de-1-fila-en-clickhouse-buffer-manager",
        "published": "2026-09-26T11:08:06.000Z"
      }
    ]
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}