科技社区热帖:Spring Boot 数据库访问性能优化、SQL/索引/连接池/ORM 查询效率和系统瓶颈排查
文章围绕 Spring Boot 场景下的数据库访问性能优化展开,重点关注 SQL 执行效率、索引设计、连接池配置、ORM 查询和并发增长后的系统瓶颈排查;外部来源:rushter.com。 外部正文摘录:Using them in ClickHouse can lead to unexpected and often unnoticeable performance degradation. When using null values in PostgreSQL, you rarely notice any difference. Internally, each row in PostgreSQL has a bitmap that indicates which columns are NULL.PostgreSQL is a row-oriented database, so when you read a row, you…