Implementing Feign Circuit Breaker Fallback with Sentinel in Spring Cloud Alibaba
Overview
Without circuit breaking, invoking a downstream service that is offline results in prolonged HTTP timeouts or immediate exceptions—often leading to cascading failures across dependent serviecs. This article demonstrates how to integrate Sentinel with OpenFeign to provide graceful degradation and circuit-breaking behavior for remote cal ...
Posted on Sun, 10 May 2026 15:57:53 +0000 by hno
Building a 3-Node Redis Sentinel Cluster with Bloom Filter on CentOS 7
Environment Preparation
Server Allocation
Hostname
IP
Role
Sentinel
redis-sentry-0
10.10.101.26
Primary
Yes
redis-sentry-1
10.10.101.27
Replica
Yes
redis-sentry-2
10.10.101.28
Replica
Yes
Install Dependencies
Redis will be compiled from source, so install the build tools first:
# Install GCC 9
yum -y install centos-release-scl
yum ...
Posted on Fri, 08 May 2026 17:11:32 +0000 by iifs044
Redis Cluster Architectures: Replication, Sentinel, and Distribution
Master-Slave Replication
The master-slave replication mechanism in Redis automatically synchronizes data from the master node to one or more slave nodes based on configuration settings. The master node primarily handles write operations, while slave nodes are optimized for read operations. The general principle is to configure multiple slaves r ...
Posted on Fri, 08 May 2026 16:54:30 +0000 by mvidberg