> For the complete documentation index, see [llms.txt](https://ilogtail.gitbook.io/ilogtail-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://ilogtail.gitbook.io/ilogtail-docs/1.6.0/data-pipeline/aggregator.md).

# 聚合

聚合插件用于将日志进行打包，从而提升发送效率。如果用户的采集配置中未指定聚合插件，则iLogtail会使用默认聚合插件，即`aggregator_base`。