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Xiaolei Talks DB
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Xiaolei Talks DB

Sharing daily database operations insights, from distributed databases to cloud migration. Author: Dai Xiaolei, with 10+ years of DB ops and development experience. Your support is appreciated.

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Recent Articles

Latest from Xiaolei Talks DB

42 recent articles
Xiaolei Talks DB
Xiaolei Talks DB
Jun 28, 2026 · Databases

Returning to Nanda Tongyong After 15 Years: A Dual Reunion of Time and Technology

Fifteen years after an internship at Nanda Tongyong, the author returns as an external expert to reflect on personal growth, the evolution of the GBase product line—from the early MPP database to AI‑native HTAP solutions—highlighting technical innovations, benchmark results, and the broader impact on the domestic database ecosystem.

AICloud Data WarehouseGBase
0 likes · 17 min read
Returning to Nanda Tongyong After 15 Years: A Dual Reunion of Time and Technology
Xiaolei Talks DB
Xiaolei Talks DB
Feb 25, 2026 · Databases

Engula: Redis‑Compatible In‑Memory Database Cutting Memory Use by 50%

Engula is a Redis‑compatible, high‑performance in‑memory database that cuts memory usage by up to 50% through compression and metadata optimization, while incurring only about 10% performance overhead, and its architecture, testing methodology, and benchmark results are detailed in this article.

CompatibilityIn-Memory DatabaseMemory compression
0 likes · 7 min read
Engula: Redis‑Compatible In‑Memory Database Cutting Memory Use by 50%
Xiaolei Talks DB
Xiaolei Talks DB
Nov 25, 2025 · Databases

What’s New in MongoDB 8.2? Performance Boosts, AI Features, and Multi‑Cloud Power

The article reviews MongoDB 8.2’s major upgrades, highlighting up to 36% read throughput gains, 59% write speed improvements, 200% faster time‑series aggregation, 50‑fold faster shard rebalancing, enhanced queryable encryption, native vector search, multi‑cloud Atlas support, and AI‑driven capabilities such as hybrid search and the MongoDB AMP platform.

AIMongoDBMulti-Cloud
0 likes · 7 min read
What’s New in MongoDB 8.2? Performance Boosts, AI Features, and Multi‑Cloud Power
Xiaolei Talks DB
Xiaolei Talks DB
Oct 22, 2025 · Databases

How to Evaluate a Database’s Long‑Term Service Capability

In a landscape crowded with OLTP, OLAP, HTAP, NewSQL and cloud‑native options, this article explains why enterprises must look beyond performance and assess a database’s five‑dimensional long‑term service capability to ensure sustainable growth and low migration risk.

Enterprise Architecturedatabaseslong-term evaluation
0 likes · 9 min read
How to Evaluate a Database’s Long‑Term Service Capability
Xiaolei Talks DB
Xiaolei Talks DB
Aug 28, 2025 · Databases

How AI Is Transforming Databases: Highlights from China’s DTCC2025

At DTCC2025 in Beijing, industry leaders showcased AI-driven innovations, vector database advances, RAG techniques, and distributed database performance breakthroughs, illustrating how databases are evolving from passive data stores into intelligent, autonomous systems that boost efficiency, scalability, and business value across sectors.

AIRAGVector Search
0 likes · 10 min read
How AI Is Transforming Databases: Highlights from China’s DTCC2025
Xiaolei Talks DB
Xiaolei Talks DB
Jun 5, 2025 · Databases

How Zhihu Scaled Its Data Architecture with OceanBase: A Multi‑Database Journey

Zhihu’s evolving data architecture transitioned from a single MySQL setup to a heterogeneous ecosystem of SQL, NoSQL, and graph databases, ultimately adopting OceanBase for its multi‑tenant, high‑compression capabilities, supported by tools like OMS, OCP, and ob‑operator to achieve cost savings, performance gains, and robust operations.

Database MigrationMulti‑TenantOceanBase
0 likes · 12 min read
How Zhihu Scaled Its Data Architecture with OceanBase: A Multi‑Database Journey
Xiaolei Talks DB
Xiaolei Talks DB
May 16, 2025 · Databases

How Online DDL Impacts TPS/QPS in OceanBase: A Comprehensive Test

This article details a systematic performance test of OceanBase's online DDL capabilities, measuring TPS and QPS impacts across various DDL operations, describing the test environment, scripts, results, and conclusions for reliable database schema changes.

OceanBaseOnline DDLQPS
0 likes · 17 min read
How Online DDL Impacts TPS/QPS in OceanBase: A Comprehensive Test