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How does connection pooling improve MySQL performance?

How does connection pooling improve MySQL performance?

Connection pooling can significantly improve MySQL performance. 1) It reduces the number of connection creation and closing times by pre-creating and maintaining a set of connections. 2) Initialize the connection pool when the application starts, get the connection from the pool when requested, and return it after use. 3) Configuring the connection pool size, setting timeouts and health checks, managing transactions, and ensuring code readability and maintenance are best practices for implementation.

Apr 03, 2025 am 12:02 AM
MySQL性能 连接池
What is the MySQL Slow Query Log and how do you use it effectively?

What is the MySQL Slow Query Log and how do you use it effectively?

MySQLSlowQueryLog is a tool for recording queries whose execution time exceeds a set threshold. 1) Enable slow query logs and set thresholds; 2) View slow query log files; 3) Use mysqldumpslow tool to analyze slow queries; 4) Clean the log files regularly and adjust the thresholds; 5) Improve database performance by analyzing logs and using indexes.

Apr 03, 2025 am 12:01 AM
性能调优
Explain MySQL semi-synchronous replication.

Explain MySQL semi-synchronous replication.

MySQL semi-synchronous replication balances data consistency and performance by waiting for at least one slave library to confirm before the master library returns to the client. 1) Enable semi-synchronous replication on the main library: SETGLOBALrpl_semi_sync_master_enabled=1;2) Enable semi-synchronous replication on the slave library: SETGLOBALrpl_semi_sync_slave_enabled=1; This method not only improves data consistency, but does not seriously affect performance like synchronous replication.

Apr 02, 2025 pm 07:21 PM
数据库复制
How do you detect and handle deadlocks in MySQL?

How do you detect and handle deadlocks in MySQL?

Methods for detecting and handling deadlocks in MySQL include: 1. Use the SHOWENGINEINNODBSTATUS command to view deadlock information; 2. Use the data_locks table of performance Schema to monitor the lock status; 3. Ensure that transactions acquire locks in the same order to avoid holding locks for a long time; 4. Optimize transaction design and lock strategies, and adjust the deadlock detection switch if necessary.

Apr 02, 2025 pm 07:13 PM
死锁处理 MySQL死锁
Explain different types of MySQL indexes (B-Tree, Hash, Full-text, Spatial).

Explain different types of MySQL indexes (B-Tree, Hash, Full-text, Spatial).

MySQL supports four index types: B-Tree, Hash, Full-text, and Spatial. 1.B-Tree index is suitable for equal value search, range query and sorting. 2. Hash index is suitable for equal value searches, but does not support range query and sorting. 3. Full-text index is used for full-text search and is suitable for processing large amounts of text data. 4. Spatial index is used for geospatial data query and is suitable for GIS applications.

Apr 02, 2025 pm 07:05 PM
MySQL索引 索引类型
Difference between clustered index and non-clustered index (secondary index) in InnoDB.

Difference between clustered index and non-clustered index (secondary index) in InnoDB.

The difference between clustered index and non-clustered index is: 1. Clustered index stores data rows in the index structure, which is suitable for querying by primary key and range. 2. The non-clustered index stores index key values ​​and pointers to data rows, and is suitable for non-primary key column queries.

Apr 02, 2025 pm 06:25 PM
索引类型 InnoDB索引
Explain InnoDB Full-Text Search capabilities.

Explain InnoDB Full-Text Search capabilities.

InnoDB's full-text search capabilities are very powerful, which can significantly improve database query efficiency and ability to process large amounts of text data. 1) InnoDB implements full-text search through inverted indexing, supporting basic and advanced search queries. 2) Use MATCH and AGAINST keywords to search, support Boolean mode and phrase search. 3) Optimization methods include using word segmentation technology, periodic rebuilding of indexes and adjusting cache size to improve performance and accuracy.

Apr 02, 2025 pm 06:09 PM
innodb 全文搜索
What are the key features and improvements in the latest version of MySQL?

What are the key features and improvements in the latest version of MySQL?

MySQL 8.0 enhances performance and security with features like atomic DDL, roles, and improved JSON support, aiding developers with large datasets.Character count: 159

Mar 31, 2025 am 11:04 AM
Explain the role of the performance schema in MySQL.

Explain the role of the performance schema in MySQL.

The article discusses the performance schema in MySQL, which monitors server execution to aid in performance optimization and troubleshooting.

Mar 31, 2025 am 11:03 AM
How can you use user-defined functions (UDFs) to extend MySQL's functionality?

How can you use user-defined functions (UDFs) to extend MySQL's functionality?

Article discusses using user-defined functions (UDFs) in MySQL to extend functionality, including custom calculations, external library integration, and performance optimization.

Mar 31, 2025 am 11:00 AM
What are events in MySQL? How can you use them to schedule tasks?

What are events in MySQL? How can you use them to schedule tasks?

MySQL events automate tasks like data maintenance and backups within the database, offering benefits in efficiency and consistency.

Mar 31, 2025 am 10:59 AM
How can you use triggers to automate database tasks?

How can you use triggers to automate database tasks?

Article discusses using triggers to automate database tasks like data validation, auditing, and maintaining integrity, enhancing efficiency and reliability.

Mar 31, 2025 am 10:58 AM
Explain the use of spatial data types in MySQL.

Explain the use of spatial data types in MySQL.

The article discusses MySQL's spatial data types for managing geometric data in GIS, detailing types like POINT, LINESTRING, and POLYGON, and their benefits for spatial queries and performance.

Mar 31, 2025 am 10:56 AM
What are generated columns in MySQL?

What are generated columns in MySQL?

The article discusses generated columns in MySQL, introduced in version 5.7.8, which are calculated from expressions using other columns. It explains virtual and stored types, their performance benefits, and practical use cases like age calculation a

Mar 31, 2025 am 10:55 AM

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