Practical guides on databases, Linux, and infrastructure — sorted newest first.
Synchronous multi-master replication — every node always has complete data, no failover step needed.
Orchestrator maps your replication topology, detects primary failures, and promotes the best replica automatically.
Blue-green gives you an instant, reversible traffic switch. Canary lets you validate changes under real traffic before full rollout.
ProxySQL sits between your application and MySQL, handling connection pooling, query routing, and read/write splitting transparently.
Step-by-step guide to configuring MySQL primary-replica replication — binary logs, GTID, and verifying the replica is healthy.
The InnoDB Doublewrite Buffer is the silent guardian of MySQL's data integrity. It protects against torn pages and corruption during crashes.
tcpdump is the command-line Swiss Army knife for network traffic — fast, lightweight, and ideal for servers. Learn how to install and use it effectively.
Install and use Wireshark for capturing and analyzing network traffic. Covers display filters, stream following, statistics, and production tips.
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