beats

I don't know which filebeat you are referring to... https://github.com/elastic/beats/tree/master/filebeat This one? I only looked for a moment, but filebeat appears to be ingestion only. Benthos does input, output, side-effects, stream-stream joins, metrics-on-the-side, tiny-json-wrangling-webooks, and more. I find it to be like plumbers putty, closing over tooling gaps and smoothing rough edges where ordinarily you'd have to write 20 lines of stream processing code and 300 lines of error handling, reporting, and performance hacks.

People do use them, though. Look through the fastjson dependents on GitHub[1] and you'll find serious projects from the Kubernetes special interest groups and various blockchains. Heck; elastic even built their own for beats[2]. There's no big philosophy difference here. Most go programmers choose encoding/json over fastjson for the same reason most Jackson programmers choose databind over streaming: it's a simpler API. [1]: https://github.com/valyala/fastjson/network/dependents?depen... [2]: https://github.com/elastic/beats

It sounds like you will not be able use the elasticsearch output with previous versions of ES or forks like OpenSearch. See also: https://github.com/elastic/beats/pull/25351 https://www.elastic.co/guide/en/beats/libbeat/current/breaki...