This article details a performance comparison between UCloud's KuaiJie‑based UDB service and self‑built MySQL instances, covering environment setup, sysbench benchmarking, result analysis, and cost evaluation to guide optimal database instance selection.
This article benchmarks UCloud’s Kuaijie‑based UDB against a self‑built MySQL instance on UHost, detailing environment setup, sysbench testing parameters, QPS, insert/delete and update results, and evaluates performance gains of over 20% alongside a cost analysis showing UDB’s better price‑performance ratio.
During the COVID‑19 school closures, the education platform rapidly expanded its backend and database architecture, achieving a 20‑fold traffic increase through vertical upgrades, read/write separation, high‑availability redesign, and meticulous performance tuning, all within a few days of planning and execution.
This article examines the common causes of MySQL master‑slave replication delay, explains how to monitor the issue with SHOW SLAVE STATUS, and provides practical solutions for six typical scenarios ranging from heavy write traffic to hardware mismatches.
This article explains UDB's high‑availability architecture, detailing its dual‑node design with virtual IP and HAProxy, and describes the kernel‑level optimizations applied to MySQL's native semi‑synchronous replication, relay log handling, master.info management, and lock contention to boost stability and performance.
This article details UDB's high‑availability architecture and four kernel‑level optimizations—binlog replication, relay‑log recording, master.info handling, and relay‑log locking—that together improve MySQL semi‑synchronous replication performance and reliability.
This guide explains how to collect replication status, analyze MySQL error logs and binary logs, compare master and slave configurations, and troubleshoot common replication failures such as GTID mismatches, missing binlogs, and conflicting statements in UDB environments.
The article explains high‑availability concepts, compares typical MySQL HA architectures—including replication, clustering, and Paxos‑based solutions—and presents UDB’s dual‑master semi‑synchronous design with a Proxy layer that ensures automatic failover, data consistency, and operational resilience.
