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fix: add max_lifetime for db connection pool #4551
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WalkthroughThe changes involve renaming existing configuration parameters for database connections and introducing a new parameter for managing the maximum lifetime of these connections across multiple database implementations (MySQL, PostgreSQL, SQLite). The parameters for minimum and maximum database connections have been renamed for clarity, and a new field, Changes
Sequence Diagram(s)sequenceDiagram
participant Config
participant MySQL
participant PostgreSQL
participant SQLite
Config->>MySQL: Set sql_db_connections_max_lifetime
MySQL->>MySQL: Check if sql_db_connections_max_lifetime > 0
MySQL->>MySQL: Set max_lifetime if true
Config->>PostgreSQL: Set sql_db_connections_max_lifetime
PostgreSQL->>PostgreSQL: Check if sql_db_connections_max_lifetime > 0
PostgreSQL->>PostgreSQL: Set max_lifetime if true
Config->>SQLite: Set sql_db_connections_max_lifetime
SQLite->>SQLite: Check if sql_db_connections_max_lifetime > 0
SQLite->>SQLite: Set max_lifetime if true
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Actionable comments posted: 0
Outside diff range and nitpick comments (1)
src/config/src/config.rs (1)
933-938: Approve the new configuration for setting the maximum lifetime of database connections.Adding the ability to configure the maximum lifetime of individual database connections is a good practice. It allows connections to be recycled after a certain duration, preventing stale connections and potential connection leaks.
A few additional considerations:
Ensure that the chosen default value of 0 (indicating no maximum lifetime) is appropriate for your use case. Consider setting a sensible default value if most deployments are expected to specify a maximum lifetime.
Monitor the database connections to verify that they are being recycled as per the configured
sql_db_connections_max_lifetimesetting. Observing the connection pool metrics will help validate the effectiveness of this setting.Document this new configuration option, including the units (seconds), default value, and its impact on database connection management.
Review details
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Review profile: CHILL
Files selected for processing (4)
- src/config/src/config.rs (2 hunks)
- src/infra/src/db/mysql.rs (1 hunks)
- src/infra/src/db/postgres.rs (1 hunks)
- src/infra/src/db/sqlite.rs (1 hunks)
Additional context used
Path-based instructions (4)
src/infra/src/db/postgres.rs (1)
Pattern
**/*.rs: You are a smart rustlang pull request reviewer.
You are going to review all the rustlang files.
Be concise, and add a brief explanation to your suggestionsMake sure the responses are not too verbose and keep the suggestions to the point i.e. actionable.
src/infra/src/db/sqlite.rs (1)
Pattern
**/*.rs: You are a smart rustlang pull request reviewer.
You are going to review all the rustlang files.
Be concise, and add a brief explanation to your suggestionsMake sure the responses are not too verbose and keep the suggestions to the point i.e. actionable.
src/infra/src/db/mysql.rs (1)
Pattern
**/*.rs: You are a smart rustlang pull request reviewer.
You are going to review all the rustlang files.
Be concise, and add a brief explanation to your suggestionsMake sure the responses are not too verbose and keep the suggestions to the point i.e. actionable.
src/config/src/config.rs (1)
Pattern
**/*.rs: You are a smart rustlang pull request reviewer.
You are going to review all the rustlang files.
Be concise, and add a brief explanation to your suggestionsMake sure the responses are not too verbose and keep the suggestions to the point i.e. actionable.
Additional comments not posted (9)
src/infra/src/db/postgres.rs (3)
39-45: LGTM!The logic for setting the
max_lifetimebased on the configuration value is correct. The code segment is using an if-else block to conditionally set the value, creating aDurationobject if the value is greater than 0, and setting it toNoneotherwise.
49-49: LGTM!The logic for setting the
max_lifetimeusing the value from themax_lifetimevariable is correct.
47-48: Verify the configuration values have been updated.The logic for setting the
min_connectionsandmax_connectionsis correct. However, ensure that the values in the configuration file have been updated to match the new names of the configuration parameters.Run the following script to verify the configuration values:
Verification successful
Configuration update verified successfully
The new parameter names
sql_db_connections_minandsql_db_connections_maxhave been correctly implemented and are consistently used across the codebase. They are properly defined in the configuration structure (src/config/src/config.rs) and utilized in the database-specific files for MySQL, SQLite, and PostgreSQL.Key findings:
- Configuration structure updated in src/config/src/config.rs
- Consistent usage in database files:
- src/infra/src/db/mysql.rs
- src/infra/src/db/sqlite.rs
- src/infra/src/db/postgres.rs
The changes have been applied thoroughly, ensuring that the new naming convention is used throughout the relevant parts of the codebase.
Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Verify the configuration values have been updated to match the new names. # Test: Search for the old configuration parameter names. Expect: No occurrences. rg --type-not rust $'sql_min_db_connections|sql_max_db_connections'Length of output: 68
Script:
#!/bin/bash # Description: Verify the new configuration parameter names and test rg functionality # Test 1: Search for the new configuration parameter names echo "Searching for new parameter names:" rg --type-not rust $'sql_db_connections_min|sql_db_connections_max' # Test 2: Verify rg functionality with a known string echo "Verifying rg functionality:" rg --type-not rust "README"Length of output: 1899
Script:
#!/bin/bash # Description: Further investigation of configuration parameters # Test 1: Search for the new configuration parameter names in Rust files echo "Searching for new parameter names in Rust files:" rg --type rust $'sql_db_connections_min|sql_db_connections_max' # Test 2: Search for partial matches of the parameter names echo "Searching for partial matches of parameter names:" rg $'sql.*connections' # Test 3: List potential configuration files echo "Listing potential configuration files:" fd -e toml -e yaml -e json -e rs | grep -i 'config'Length of output: 5304
src/infra/src/db/sqlite.rs (1)
83-96: LGTM!The changes introduce a new configuration option
sql_db_connections_max_lifetimeto manage the maximum lifetime of database connections, providing more granular control over the lifespan of these connections. This can help optimize resource usage.The minimum and maximum connection parameters have also been renamed to
sql_db_connections_minandsql_db_connections_maxrespectively, improving clarity and consistency in the configuration settings.The implementation looks good, with a conditional check to determine if
sql_db_connections_max_lifetimeis greater than zero, and setting themax_lifetimevariable accordingly. This variable is then correctly applied to theSqlitePoolOptionsconfiguration.src/infra/src/db/mysql.rs (2)
39-45: LGTM!The code segment correctly handles the new
sql_db_connections_max_lifetimeconfiguration parameter and sets the maximum lifetime for database connections accordingly. UsingNonefor a value of 0 or less is a good way to indicate no maximum lifetime limit. The code is concise and easy to understand.
47-49: LGTM!The renaming of the configuration parameters for minimum and maximum database connections improves clarity and consistency in the naming convention. The changes align with the naming of the new
sql_db_connections_max_lifetimeparameter and do not affect the functionality of the code.src/config/src/config.rs (3)
930-930: LGTM!The field has been appropriately renamed for better clarity.
932-932: LGTM!The field has been appropriately renamed for better clarity.
1322-1322: Verify the impact of increasing the default value forconsistent_hash_vnodes.The default value for
consistent_hash_vnodeshas been significantly increased from 3 to 100. While a higher value can provide better distribution in a consistent hashing setup, it's important to verify that this change doesn't introduce any unintended side effects.Please run the following script to analyze the impact:
If any of the above checks indicate potential issues or if the performance impact is significant, consider if this change is necessary or if a different value might be more appropriate.
Add a new ENV
ZO_META_CONNECTION_POOL_MAX_LIFETIMEdefault is0, you can set it by seconds.For example. you want the max life time is 2 hours:
Summary by CodeRabbit
New Features
Improvements