Is ConfigCat Down?

No — ConfigCat is up

ConfigCat's status page: Not available · we could not read it
FlareWarden checks: Website reachable · 8 of 8 regions · 235 ms

Right now

We could not read ConfigCat's status page, so the verdict rests on our checks. Check it yourself How we decide

FlareWarden checks

app.configcat.com from 8 regions · when you open this page (at most every 30 minutes), otherwise every 6 hours

Reachable

Regions up: 8 of 8
Response: 235 ms
Checked: 1 hour ago

By region

Ashburn reachable, 259 ms
Chicago reachable, 320 ms
Johannesburg reachable, 277 ms
London reachable, 133 ms
Los Angeles reachable, 288 ms
San Jose reachable, 183 ms
Singapore reachable, 195 ms
Tokyo reachable, 227 ms

Timing by region

Connection timing for each region that loaded the page
Region	DNS	TCP	TLS	TTFB
Ashburn	103 ms	1 ms	8 ms	257 ms
Chicago	106 ms	2 ms	13 ms	318 ms
Johannesburg	208 ms	1 ms	6 ms	276 ms
London	14 ms	3 ms	8 ms	129 ms
Los Angeles	145 ms	3 ms	12 ms	284 ms
San Jose	24 ms	2 ms	8 ms	181 ms
Singapore	114 ms	2 ms	7 ms	192 ms
Tokyo	132 ms	1 ms	11 ms	225 ms

We check that app.configcat.com loads, not every feature behind it. Test it yourself

History

ConfigCat website availability

Measured by FlareWarden · app.configcat.com

Last 7 days: 100%
Last 30 days: 100%
Last 90 days: 100%
Avg response, 30 days: 217ms

Last 30 days

72-day clean streak

Oct 8 Today

No downtime Partial Downtime Not measurable No data

Measured by FlareWarden's own checks of app.configcat.com from multiple regions every 6 hours. ConfigCat's status page sets the verdict above when it reports trouble, but never these figures. Percentages count only checks that returned an availability answer — 72 days measured so far. A dash means that window does not yet hold enough measured days to publish a figure.

What ConfigCat does

ConfigCat is a hosted feature flag service. Developers define flags in a dashboard and ConfigCat distributes the resulting configuration through a CDN to SDKs embedded in applications. Teams use it to turn features on and off without deploying and to run gradual rollouts, which puts it in the request path of production software.

What an outage looks like

Less than people expect. Applications keep evaluating flags from the configuration their SDK already cached, so the visible symptom is usually that a flag change made in the dashboard never reaches running applications. The dashboard itself may fail to load or save. Processes starting with an empty cache are the ones genuinely at risk.

What to do about it

Check ConfigCat's status page, then confirm whether anything is actually broken: a failed refresh does not erase configuration an SDK has already downloaded, so most applications continue on their last known good values. Hold deployments that would start instances with a cold cache. Teams running the ConfigCat Proxy have a local copy to serve from.

Is it down for everyone, or just you?

If this page says ConfigCat is up but it is not loading for you, the problem is between you and them. Run a check against any URL from up to 17 cities across three regions to find out where it breaks.

Test it yourself

Related services

ConfigCat outage FAQ

Does my application break when ConfigCat is down?

Usually not. ConfigCat SDKs cache the last configuration they downloaded successfully and keep evaluating flags from it when a refresh fails, whether the cause is network, DNS, CDN or the service itself. Flag values simply stop changing. This is documented fault tolerance rather than a lucky side effect.

Will a flag change I make now reach my users?

Not until SDKs can fetch again. In auto polling mode SDKs pull the latest configuration roughly every 60 seconds by default, and lazy loading uses a cache with a 60 second time to live. During an incident those refreshes fail and applications hold their previous values.

What about processes that start during the outage?

Those are the real exposure. An SDK starting with no cached configuration has nothing to fall back on and uses the default values compiled into your code. Holding deployments and avoiding autoscaling events during a ConfigCat incident keeps running instances on the configuration they already hold.

Does the ConfigCat Proxy help here?

Yes. The Proxy runs a flag evaluation service inside your own infrastructure and acts as an extra caching and delivery layer, so applications talk to it instead of reaching ConfigCat's CDN directly. It is the option teams choose when an external dependency in the request path is unacceptable.

How we measure this

We request ConfigCat's public endpoint every 6 hours from Fly.io regions across six continents — the most recent check ran from 8 of them. When you open this page and our last check is more than 30 minutes old, we check again on the spot; those checks update the verdict, never the availability figures.
A region counts as down only when it gets no usable HTTP response. A 403 or 429 means the origin answered and refused us, which we report as blocked, never as an outage.
A single failing region is treated as probe noise. Our checks only change their verdict when two consecutive cycles agree.
Response times average only the regions that actually served the page, so a timeout never inflates the number.
Where ConfigCat publishes an official status feed we read it too, and the verdict is the worse of what it reports and what our checks see: a major outage of ConfigCat itself is Down, trouble with one part of it is Degraded, problems at a few of a provider's many locations change nothing, and a security notice that marks nothing down is shown but changes nothing either. A reading counts for 45 minutes; we read the feed again within minutes of any change to its incidents. The availability figures above are our measurement alone.

Get alerted when ConfigCat goes down

We check ConfigCat every 6 hours, and again when you open this page if that was more than 30 minutes ago. Your own monitors run as often as every 30 seconds, from up to 17 cities across three regions, and tell you the moment something breaks.

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