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@hengfeiyang hengfeiyang commented Sep 16, 2024

Add a new ENV ZO_META_CONNECTION_POOL_MAX_LIFETIME default is 0, you can set it by seconds.

For example. you want the max life time is 2 hours:

ZO_META_CONNECTION_POOL_MAX_LIFETIME=7200

Summary by CodeRabbit

  • New Features

    • Introduced a new configuration parameter for maximum lifetime of database connections.
    • Enhanced connection management for MySQL, PostgreSQL, and SQLite with configurable connection lifetimes.
  • Improvements

    • Renamed connection parameters for clarity and consistency across the application.
    • Updated default behavior for result caching and consistent hashing for improved performance.

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coderabbitai bot commented Sep 16, 2024

Walkthrough

The 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, sql_db_connections_max_lifetime, has been added to allow configuration of connection lifespan. The initialization logic has been updated accordingly to reflect these changes.

Changes

File Path Change Summary
src/config/src/config.rs Renamed minimum and maximum connection fields; added sql_db_connections_max_lifetime; changed default values for result_cache_selection_strategy and consistent_hash_vnodes.
src/infra/src/db/mysql.rs Renamed minimum and maximum connection parameters; added logic for maximum connection lifetime based on sql_db_connections_max_lifetime.
src/infra/src/db/postgres.rs Renamed minimum and maximum connection parameters; added logic for maximum connection lifetime based on sql_db_connections_max_lifetime.
src/infra/src/db/sqlite.rs Added maximum connection lifetime configuration; renamed minimum and maximum connection parameters.

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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@github-actions github-actions bot added ☢️ Bug Something isn't working ✏️ Feature labels Sep 16, 2024
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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_lifetime setting. 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

Configuration used: CodeRabbit UI
Review profile: CHILL

Commits

Files that changed from the base of the PR and between 01d3142 and 2196881.

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 suggestions

Make 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 suggestions

Make 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 suggestions

Make 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 suggestions

Make 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_lifetime based on the configuration value is correct. The code segment is using an if-else block to conditionally set the value, creating a Duration object if the value is greater than 0, and setting it to None otherwise.


49-49: LGTM!

The logic for setting the max_lifetime using the value from the max_lifetime variable is correct.


47-48: Verify the configuration values have been updated.

The logic for setting the min_connections and max_connections is 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_min and sql_db_connections_max have 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_lifetime to 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_min and sql_db_connections_max respectively, improving clarity and consistency in the configuration settings.

The implementation looks good, with a conditional check to determine if sql_db_connections_max_lifetime is greater than zero, and setting the max_lifetime variable accordingly. This variable is then correctly applied to the SqlitePoolOptions configuration.

src/infra/src/db/mysql.rs (2)

39-45: LGTM!

The code segment correctly handles the new sql_db_connections_max_lifetime configuration parameter and sets the maximum lifetime for database connections accordingly. Using None for 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_lifetime parameter 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 for consistent_hash_vnodes.

The default value for consistent_hash_vnodes has 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.

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4 participants