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Spring Boot integrated sentinel quick start demo
1. What is Sentinel?
With the popularity of microservices, stability between services and services is becoming increasingly important. Sentinel is a traffic governance component for a distributed, multi-language heterogeneous service architecture, which mainly takes traffic as the entry point to help developers ensure the stability of microservices from multiple dimensions such as traffic routing, traffic control, traffic shaping, circuit breaker degradation, system adaptive overload protection, and hotspot traffic protection.
Sentinel basic concepts
resource
Resources are a key concept for Sentinel. It can be anything in a Java application, for example, a service provided by an application, or a service provided by another application called by an application, or even a piece of code. In the following documentation, we’ll describe the code block in terms of resources. As long as the code is defined through the Sentinel API, it is a resource and can be secured by Sentinel. In most cases, a resource can be identified using a method signature, URL, or even a service name as the resource name.
rules
Rules that are set around the real-time status of resources can include traffic control rules, circuit breaker degradation rules, and system protection rules. All rules can be adjusted dynamically and in real time.
