# Logpush subrequest merging is here, and your HTTP logs just got tidier!

Hey there, it's me! Today I found a nice little logging update to share with you.

## What was announced?

Over on the [Cloudflare Changelog](https://developers.cloudflare.com/changelog/), there's news that [Logpush](https://developers.cloudflare.com/logs/) now supports **subrequest merging**.

When a Worker handles a request, it can fire off extra outbound `fetch` calls along the way. Those extra calls are "subrequests," and with this update you can now fold them into a single parent request log entry.

## The story so far

Until now, the parent request and its subrequests each showed up as their own separate log lines. So even for one request, a Worker that made lots of `fetch` calls would pile up that many extra lines. Figuring out "which parent does this child belong to?" could get a little tedious.

## What changes

When you turn on subrequest merging, the subrequest logs get grouped inside the parent request record. Each subrequest lives as a nested array inside the parent, so you can see at a glance what a request called behind the scenes. Fewer log lines, easier aggregation and investigation.

## Dive Deep

The setup is simple: just add this flag when you create or update an `http_requests` Logpush job.

```json
{
  "merge_subrequests": true
}
```

With it enabled, the parent request record gains a nested `subrequests` array field, and each subrequest sits inside it using the standard `http_requests` fields. The full details are in the [Subrequests documentation](https://developers.cloudflare.com/logs/logpush/logpush-job/subrequests/).

There are a few limits to keep in mind:

- It only applies to the zone-scoped `http_requests` dataset
- Up to 50 subrequests can merge into one parent request (extras stay as individual lines like before)
- Subrequests need to complete within 5 minutes
- Subrequests that do not qualify still appear as separate log entries

One more thing: this is a gradual rollout and is not available on all zones yet. For enablement, reach out to your account team.

## Wrap-up

- Logpush now has subrequest merging (`merge_subrequests: true`)
- Your Workers' subrequests can be recorded inside the parent request's `subrequests` array
- It targets `http_requests`, with a 50-subrequest cap and a 5-minute window
- It's still rolling out gradually, and enablement goes through your account team

If you run Workers that make lots of outbound calls and want cleaner logs, this one's for you!