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126 questions, 454 terms and 400 topics in 20 areas.
12 results for “Health Checks”
Health Check
An endpoint the platform polls to decide whether an instance should be restarted or should receive traffic — two different questions needing two different checks.
Grey Failure
A component that is degraded rather than down — slow, intermittently erroring, or failing for a subset of operations — which defeats health checks built for binary states.
Application Portfolio Management
Maintaining an inventory of every application with its owner, cost, business value and technical health, and using it to decide what to invest in, replace or retire.
Service Registry
The database of currently available service instances and their addresses, maintained by registration and pruned by health checking.
One instance in a fleet of fifty is returning correct responses very slowly. Health checks pass and it stays in rotation. How do you detect and handle this?
Why it is not detected Differential observability. The instance believes it is healthy and reports so; its callers experience something else. A health check tha
A DR test fails: the secondary region cannot launch enough instances. What happened, and what standing checks prevent it?
What happened Service quotas in the secondary region are far lower than in the primary , because nothing has ever run there at scale. Quotas are per account and
Health Checks
Liveness versus readiness, and the check that causes the outage.
Application Portfolio Management
Inventory, ownership, cost and health for every application.
Capability Maps in EA
The stable frame for hanging investment, ownership and health off.
Fitness Functions
Automated checks that an architectural characteristic still holds.
Guardrails
Deterministic checks on input and output that fail closed.
Load Balancing
Distributing traffic, health checking, and removing failures from rotation.