- **Extensible Architecture**: Plugin system for custom extractors, transformers, and clients
- **Rate Limiting**: Politeness policies and interval controllers
- **URL Filtering**: Regex-based inclusion/exclusion patterns
- **Data Persistence**: Multiple backend options including OpenSearch integration

## Technology Stack

- **Java**: 21+ (requires Java 21 or higher)
- **Build System**: Maven 3.x

        this.skipMaskingForDebugLevel = enable;
        log.info("Skip masking for debug level {}", enable ? "enabled" : "disabled");
    }

    /**
     * Enable or disable stack trace inclusion
     *
     * @param enable true to include stack traces
     */
    public void setIncludeStackTrace(boolean enable) {
        this.includeStackTrace = enable;
    }

    /**

				</exclusion>
				<exclusion>
					<groupId>org.slf4j</groupId>
					<artifactId>jcl-over-slf4j</artifactId>
				</exclusion>
				<exclusion>
					<groupId>javax.activation</groupId>
					<artifactId>activation</artifactId>
				</exclusion>
				<exclusion>
					<groupId>javax.activation</groupId>
					<artifactId>javax.activation-api</artifactId>
				</exclusion>
				<exclusion>

			<artifactId>poi-ooxml</artifactId>
			<version>${poi.version}</version>
			<exclusions>
				<exclusion>
					<groupId>stax</groupId>
					<artifactId>stax-api</artifactId>
				</exclusion>
				<exclusion>
					<groupId>xml-apis</groupId>
					<artifactId>xml-apis</artifactId>
				</exclusion>
			</exclusions>
		</dependency>
		<dependency>
			<groupId>org.apache.poi</groupId>

        System.out.println("Hello, World!");
    }
}
```

## Links

Check out [Fess Crawler](https://github.com/codelibs/fess-crawler) for more information.

## Conclusion

     *
     * @param ctype2
     *            The array of character types.
     * @param low
     *            The lower bound of the character range (inclusive).
     * @param hi
     *            The upper bound of the character range (inclusive).
     */
    protected static void wordChars(final byte[] ctype2, int low, int hi) {
        if (low < 0) {
            low = 0;
        }

        }
    }

    /**
     * Determines whether the specified URL is crawlable based on the exclusion pattern
     * provided in the {@code paramMap}. If the {@code URL_EXCLUDE_PATTERN} key exists in
     * the parameter map, its value is used as a regular expression pattern to match against
     * the given URL. If the URL matches the exclusion pattern, the method returns {@code false},

			<groupId>org.junit.platform</groupId>
			<artifactId>junit-platform-runner</artifactId>
			<version>1.10.3</version>
			<scope>test</scope>
			<exclusions>
				<exclusion>
					<groupId>junit</groupId>
					<artifactId>junit</artifactId>
				</exclusion>
			</exclusions>
		</dependency>
		<dependency>
			<groupId>org.hamcrest</groupId>
			<artifactId>hamcrest</artifactId>
			<version>2.2</version>

		between the lower and upper bound specified by the Range Query. Range
		Queries can be inclusive or exclusive of the upper and lower bounds.
		If you want to find documents whose content_length fields have values
		between 1000 and 10000, inclusive, you can enter:
		<pre>content_length:[1000 TO 10000]</pre>
		If you want to exclude the upper and lower bounds, use "{}".
	</dd>
	<dt>Boost</dt>

        return sanitized;
    }

    /**
     * Validates that a value is within the specified range
     *
     * @param value the value to check
     * @param min minimum value (inclusive)
     * @param max maximum value (inclusive)
     * @param fieldName field name for error reporting
     * @throws IllegalArgumentException if value is out of range
     */