PSA: Gerrit (chromium-review) throttling requests due to high traffic

Ben Pastene

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Jun 10, 2026, 2:52:45 PM (9 days ago) Jun 10

to Chromium-dev

Hey everyone,

Gerrit (the service behind code review on https://chromium-review.googlesource.com/) is experiencing higher-than usual traffic. The Gerrit team is responding and has enabled extra traffic-protection measures. You may see this as 429s in requests when uploading or patching, or as extra captchas in the UI. For Googlers, the outage is tracked in omg/98529.

Apologies for the disruption. Hopefully the team can identify the source of the traffic increase, and resolve things promptly. We'll keep everyone posted if things are delayed.

Philipp Hancke

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Jun 12, 2026, 3:57:24 AM (7 days ago) Jun 12

to bpas...@chromium.org, Chromium-dev

Hi Ben,

this seems to also affect `git cl upload` which dumps the raw HTML but has no chance to actually click the button.

Works in the browser from the same computer/ip address but I assume that does not have the right cookies set.

OMG indeed ;-)

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Morten Stenshorne

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Jun 12, 2026, 4:05:05 AM (7 days ago) Jun 12

to 'Philipp Hancke' via Chromium-dev, bpas...@chromium.org, philipp...@gmail.com

Experiencing the same here.

$ git cl patch 7920211
[W2026-06-12 09:59:35,853 1496179 139890088941440 gerrit_util.py] A transient error occurred while querying chromium-review.googlesource.com:
GET https://chromium-review.googlesource.com/a/changes/chromium%2Fsrc~7920211/detail?o=ALL_REVISIONS&o=CURRENT_COMMIT HTTP/1.1
HTTP/1.1 429 Too Many Requests
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head><meta http-equiv="content-type" content="text/html; charset=utf-8"><meta name="viewport" content="initial-scale=1"><title>https://chromium-review.googlesource.com/a/changes/chromium%2Fsrc~7920211/detail?o=ALL_REVISIONS&o=CURRENT_COMMIT</title></head>
<body style="font-family: arial, sans-serif; background-color: #fff; color: #000; padding:20px; font-size:18px; overscroll-behavior:contain;" onload="e=document.getElementById('captcha');if(e){e.focus();} if(solveSimpleChallenge) {solveSimpleChallenge(0,0);}">
<div style="max-width:400px;">
<hr noshade size="1" style="color:#ccc; background-color:#ccc;"><br>
<form id="captcha-form" action="index" method="post">
<noscript>
<div style="font-size:13px;">
In order to continue, please enable javascript on your web browser.
[...]

> --

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Morten Stenshorne, Software developer, Blink/Layout, Google, Oslo, Norway

Ben Pastene

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Jun 12, 2026, 1:50:27 PM (7 days ago) Jun 12

to Morten Stenshorne, 'Philipp Hancke' via Chromium-dev, philipp...@gmail.com

That's all very likely stemming from the general availability issues Gerrit's been having this week. Same is true for any sluggishness or 500s encountered when loading the web UI, as well as delays in CQ triggers.

I don't believe there's an ETA for resolution, but the Gerrit team is still actively investigating. Apologies again for the disruption.

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