Oracle RAC Cluster Heartbeat Mechanisms and Best Practices
Physical Network Configuration Guidelines
Avoid direct crossover cabling between nodes; use dedicated switches instead.
Isolate the private interconnect (heartbeat network) from the public application network.
If sharing a switch is unavoidable, enforce VLAN segmentation.
Oracle explicitly prohibits crossover cables for Clusterware internal ...
Posted on Sat, 09 May 2026 14:38:34 +0000 by kinaski
Redis Replication: Configuration, Topology, and Synchronization Mechanisms
Table of Contents
Introduction to Replication
Replication Configuration
Establishing Replication
Terminating Replication
Topology Structures
Replication Process
Data Synchronization Internals
Components Required for PSYNC
PSYNC Command
Full Synchronization
Partial Synchronization
Master-Replica Heartbeat
Full Sync Triggers
Common Configu ...
Posted on Sat, 09 May 2026 03:10:03 +0000 by robin339
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