The [[ https://en.m.wikipedia.beta.wmflabs.org/wiki/Barack_Obama | Barack Obama ]] page often fails with a 500 or 503 on the beta cluster:. When it does respond successfully, it takes a long while.
= 503
== Response
```
Request from 73.181.4.128 via deployment-cache-text05 deployment-cache-text05, Varnish XID 47912111
Error: 503, Backend fetch failed at Tue, 04 Dec 2018 16:11:26 GMT
```
When it does respond successfully, it takes a long while.
== Request headers
```
:authority: en.wikipedia.beta.wmflabs.org
:method: GET
:path: /wiki/Barack_Obama
:scheme: https
accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8
accept-encoding: gzip, deflate, br
accept-language: en-US,en;q=0.9,es;q=0.8
cache-control: no-cache
cookie: GeoIP=US:CO:Denver:39.64:-104.91:v4; centralauth_User=Teststephen; centralauth_Token=665ec74188d005d16b67ad882b316d43; enwikiUserID=13929; enwikiUserName=Teststephen; forceHTTPS=true; enwikiSession=2lcfsqgsllg4bdgffetht05f2ita40at; WMF-Last-Access=04-Dec-2018; WMF-Last-Access-Global=04-Dec-2018; centralauth_Session=6517540bfa7994929a6fb367269c938e
pragma: no-cache
upgrade-insecure-requests: 1
user-agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu Chromium/70.0.3538.77 Chrome/70.0.3538.77 Safari/537.36
```
== Response headers
```
age: 0
cache-control: private, s-maxage=0, max-age=0, must-revalidate
content-encoding: gzip
content-type: text/html; charset=utf-8
date: Tue, 04 Dec 2018 16:11:26 GMT
server: Varnish
server-timing: cache;desc="int-local"
status: 503
vary: Accept-Encoding
via: 1.1 varnish (Varnish/5.1), 1.1 varnish (Varnish/5.1)
x-analytics: WMF-Last-Access=04-Dec-2018;WMF-Last-Access-Global=04-Dec-2018;https=1
x-cache: deployment-cache-text05 int, deployment-cache-text05 miss
x-cache-status: int-local
x-client-ip: 73.181.4.128
x-varnish: 47912110, 6366645
```
= 500
== Response headers
```
age: 0
cache-control: private, s-maxage=0, max-age=0, must-revalidate
date: Tue, 04 Dec 2018 16:21:40 GMT
server: Varnish
server-timing: cache;desc="miss"
status: 500
via: 1.1 varnish (Varnish/5.1)
x-analytics: WMF-Last-Access=04-Dec-2018;WMF-Last-Access-Global=04-Dec-2018;https=1
x-cache: deployment-cache-text05 miss
x-cache-status: miss
x-client-ip: 73.181.4.128
x-varnish: 15058873
```
== Request headers
```
:authority: en.m.wikipedia.beta.wmflabs.org
:method: GET
:path: /wiki/Barack_Obama
:scheme: https
accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8
accept-encoding: gzip, deflate, br
accept-language: en-US,en;q=0.9,es;q=0.8
cache-control: no-cache
cookie: GeoIP=US:CO:Denver:39.64:-104.91:v4; enwikiUserID=13929; enwikiUserName=Teststephen; centralauth_User=Teststephen; centralauth_Token=665ec74188d005d16b67ad882b316d43; loginnotify_prevlogins=2018-1mfuhjz-l9zoaixm1nkzty7bhnbwk9sa8y2qzth; forceHTTPS=true; WMF-Last-Access-Global=04-Dec-2018; WMF-Last-Access=04-Dec-2018; enwikiSession=771a5abtfs0iv63r0vrua2sbdsjdbeg6; centralauth_Session=443538f13517d189190bb40f6a96cba7
pragma: no-cache
upgrade-insecure-requests: 1
user-agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu Chromium/70.0.3538.77 Chrome/70.0.3538.77 Safari/537.36
```