August 2019
Intermediate to advanced
256 pages
6h 43m
English
book
Hands-On Enterprise Java Microservices with Eclipse MicroProfile
by Cesar Saavedra, Heiko W. Rupp, Jeff Mesnil, Pavol Loffay, Antoine Sabot-Durand, Scott Stark
Content preview from Hands-On Enterprise Java Microservices with Eclipse MicroProfile
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Understanding health checks and how MicroProfile handles them
In cloud-native architectures, health checks are used to determine whether a computing node is alive and ready to perform work. The concept of readiness describes the state when containers start up or roll over (that is, redeployment). During this time, the cloud platform needs to ensure that no network traffic is routed to that instance before it is ready to perform work.
Liveness, on the other hand, describes the state of a running container; that is, can it still respond to requests? If either the liveness or readiness states are seen as invalid, the computing node will be discarded (terminated or shut down) and eventually replaced by another, healthy, instance.
Health checks ...
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