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Root Configuration
Class：org.apache.shardingsphere.parser.config.SQLParserRuleConfiguration
Attributes：
| name | DataType | Description |
|---|---|---|
| sqlCommentParseEnabled (?) | boolean | Whether to parse SQL comments |
| parseTreeCache (?) | CacheOption | Parse syntax tree local cache configuration |
| sqlStatementCache (?) | CacheOption | sql statement local cache configuration |
Cache option Configuration
Class：org.apache.shardingsphere.sql.parser.api.CacheOption
Attributes：
| name | DataType | Description | Default Value |
|---|---|---|---|
| initialCapacity | int | Initial capacity of local cache | parser syntax tree local cache default value 128, SQL statement cache default value 2000 |
| maximumSize(?) | long | Maximum capacity of local cache | The default value of local cache for parsing syntax tree is 1024, and the default value of sql statement cache is 65535 |
| concurrencyLevel | int | Local cache concurrency level, the maximum number of concurrent updates allowed by threads | 4 |
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