Module core

Core implementations of Sentinel, including the statistic structures, such as the slding window and its underlying LeapArray, the rule managers, and other utilities on configuration and metric logs. The rule managers are responsible for managing the flow controller, circuit breaker, isolation and system status related rules. Core implementations of Sentinel.

Modules

base

Basic definitions, traits, and implementations for Sentinel slot chain, entry, context and so on.

circuitbreaker

Circuit breaker rules and slots. circuitbreaker module implements the circuit breaker pattern, which provides stability and prevents cascading failures in distributed systems.

config

Configuration utilities.

flow

Flow control rules and slots. The flow mod implements the flow shaping control.

hotspot

Hot key rules and slots. The hotspot mod provides implementation of “hot-spot” (frequent) parameter flow control.

isolation

Resource isolation rules and slots. Currently, only concurrency is supported. mod isolation provides implementation of concurrency limiting (semaphore isolation).

log

Metric logging slots.

stat

Statistic slots and basic data structures, such as the slding window and its underlying LeapArray

system

System status rules and slots. mod system provides implementation of adaptive system protection.

system_metric

System status collector.