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Java Companion
Java Companion
Apr 26, 2026 · Databases

Is Sharding Ready to Retire? Why the Classic Split‑Database Approach Is Becoming Legacy

The article reviews the rise and decline of traditional database sharding, explains its technical pitfalls such as wrong shard keys, cross‑database joins, and distributed transactions, compares it with emerging NewSQL solutions like TiDB, OceanBase and PolarDB‑X, and offers practical criteria for choosing the right architecture.

NewSQLOceanBasePolarDB-X
0 likes · 14 min read
Is Sharding Ready to Retire? Why the Classic Split‑Database Approach Is Becoming Legacy
Alibaba Cloud Developer
Alibaba Cloud Developer
Oct 17, 2025 · Databases

Explore PolarDB‑X v2.4.2: New Proxy, Multi‑Language Connectors, and High‑Performance Features

PolarDB‑X version 2.4.2 introduces a Java‑based proxy, multi‑language client drivers, enhanced HA switching, MySQL‑compatible replication, performance testing results, and the open‑source MCP server for AI integration, providing a comprehensive overview of the latest distributed database capabilities.

ConnectorMCP ServerMySQL replication
0 likes · 19 min read
Explore PolarDB‑X v2.4.2: New Proxy, Multi‑Language Connectors, and High‑Performance Features
FunTester
FunTester
Jul 21, 2022 · Databases

Scaling Databases with Distributed Sharding and Peak‑Shaving Strategies

The article explains why simply adding hardware cannot keep up with growing database workloads and presents a three‑step approach—business isolation, horizontal sharding, and advanced reporting using PolarDB‑X—to achieve high concurrency, elastic capacity, and efficient caching for modern high‑traffic applications.

Distributed SystemsPeak ShavingPolarDB-X
0 likes · 7 min read
Scaling Databases with Distributed Sharding and Peak‑Shaving Strategies
dbaplus Community
dbaplus Community
Jul 20, 2022 · Databases

From Middleware to Distributed Database: The Evolution of PolarDB‑X

PolarDB‑X evolved from Alibaba’s internal sharding middleware TDDL to the DRDS cloud service and finally to a fully distributed MySQL‑compatible database, introducing a full SQL optimizer, MPP engine, global secondary indexes, strong‑consistent distributed transactions via TSO + 2PC, and full binlog compatibility.

MySQL compatibilityPolarDB-Xglobal index
0 likes · 26 min read
From Middleware to Distributed Database: The Evolution of PolarDB‑X
ITPUB
ITPUB
Aug 5, 2021 · Databases

How PolarDB‑X’s SQL Flashback Restores Accidentally Deleted Rows in Seconds

This article explains how PolarDB‑X classifies different data‑deletion scenarios, compares traditional recovery methods like PITR, Flashback Query, and binlog‑based tools, and introduces its precise SQL‑level flashback feature that uses TraceID to quickly and accurately restore mistakenly deleted rows.

BinlogData RecoveryFlashback
0 likes · 13 min read
How PolarDB‑X’s SQL Flashback Restores Accidentally Deleted Rows in Seconds
Alibaba Cloud Developer
Alibaba Cloud Developer
Jun 24, 2019 · Databases

How X‑Engine Redefines LSM Storage for High‑Performance E‑Commerce

This article provides an in‑depth technical overview of Alibaba's X‑Engine storage engine, explaining its LSM‑based architecture, compaction optimizations, transaction pipeline, caching strategies, and how these innovations enable low‑cost, high‑throughput OLTP for large‑scale e‑commerce workloads.

LSMPolarDB-XStorage Engine
0 likes · 18 min read
How X‑Engine Redefines LSM Storage for High‑Performance E‑Commerce