Outage

An outage is an event in which a service cannot be used. It may be total, where every request fails, or partial, where only some features, regions or customer groups are affected. Outages are a type of incident and the main driver of downtime figures.

Why it matters

Outages directly affect revenue, support load and reputation. Knowing the scope quickly (everyone, one region, one feature) points to the cause. A DNS problem, for example, tends to affect everyone, while a failing node behind a load balancer affects only a share of requests. Checking from several locations helps tell a global outage from a local network problem.

Example

Status page wording for a partial outage:

Investigating: Some users in Europe cannot log in.
Impact: about 20% of login requests fail with HTTP 502.
Next update in 30 minutes.

A major outage would instead say the whole site is unavailable.

Common misconceptions

• "If I can load it, it is not an outage." The site may be failing for other regions or users.
• "Outages are always caused by the provider." Expired domains, certificates and bad deploys are common self-inflicted causes.
• "No alert means no outage." Shallow checks can miss failures.

Related

• Downtime
• Incident
• Degraded performance
• Status page

यह पेज सामान्य जानकारी है, जिसे हमारी संपादकीय टीम ने लिखा है और दस्तावेज़ीकरण बदलने पर अपडेट किया जाता है। सर्वर और प्रदाता अलग-अलग होते हैं, इसलिए बदलाव पहले सुरक्षित तरीके से जाँचें। देखें: संपादकीय नीति और अस्वीकरण.