Yisheng's Blog

2025-09-01 工作三年，许多想说
2025-05-23 Redis vs Valkey
2024-04-09 Why MySQL replication is lagging
2024-01-16 Lost connection error with aiomysql
2023-08-08 Spark executor OOM: not enough memory to build hash map
2023-06-05 Nginx reuseport导致偶发性卡顿
2023-05-27 Avoid using big strings as MySQL index key
2023-05-22 Is 20M rows still a soft limit of MySQL table in 2023?
2023-05-06 为什么我的网络传输速度下降了
2023-04-15 Packet capture experiment 2
2023-04-11 Packet capture experiment 1
2023-03-18 Spot termination makes runtime unstable
2023-03-15 Spark driver OOM: Broadcast variable is too big
2023-02-16 Redis OOM due to big keys
2023-02-10 MySQL connection deadlock
2023-01-13 Why signal file is a bad idea