---

## Architecture

### Module Structure

```
fess-crawler-parent/
├── fess-crawler/              # Core framework
├── fess-crawler-lasta/        # LastaFlute DI integration
└── fess-crawler-opensearch/   # OpenSearch backend
```

### Key Design Patterns

**Factory**: `CrawlerClientFactory`, `ExtractorFactory` - protocol/format-specific component selection

	e.init.Do(func() {
		e.cached.Store(&AccElem{})
		atomic.StoreInt64(&e.cachedSec, t)
	})
	acc := e.cached.Load()
	if lastT := atomic.LoadInt64(&e.cachedSec); lastT != t {
		// Check if lastT was changed by someone else.
		if atomic.CompareAndSwapInt64(&e.cachedSec, lastT, t) {
			// Now we swap in a new.
			newAcc := &AccElem{}
			old := e.cached.Swap(newAcc)
			var a AccElem

			<artifactId>fess-crawler</artifactId>
			<version>${project.version}</version>
		</dependency>
		<dependency>
			<groupId>org.lastaflute</groupId>
			<artifactId>lasta-di</artifactId>
			<version>${lasta.di.version}</version>
		</dependency>
		<dependency>
			<groupId>jakarta.transaction</groupId>
			<artifactId>jakarta.transaction-api</artifactId>
			<version>${jakarta.transaction.version}</version>

    #                                                                             Lasta Di
    #                                                                             ========
    # /- - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
    # o dbfluteDiXmlNamespace: (NotRequired - Default 'dbflute')
    #  The namespace of DBFlute DI configuration for Lasta Di.
    #
    # @LastaDiOnly
    #; dbfluteDiXmlNamespace = dbflute

			<artifactId>fesen-httpclient</artifactId>
			<version>${fesen.httpclient.version}</version>
		</dependency>
		<dependency>
			<groupId>org.lastaflute</groupId>
			<artifactId>lasta-di</artifactId>
			<version>${lasta.di.version}</version>
		</dependency>
		<dependency>
			<groupId>jakarta.transaction</groupId>
			<artifactId>jakarta.transaction-api</artifactId>
			<version>${jakarta.transaction.version}</version>

	pluginAuthnServiceSuccMaxRttMsMinuteMD   = NewCounterMD(pluginAuthnServiceSuccMaxRttMsMinute, "When plugin authentication is configured, returns maximum round-trip-time of successful requests in the last full minute")
	pluginAuthnServiceTotalRequestsMinuteMD  = NewCounterMD(pluginAuthnServiceTotalRequestsMinute, "When plugin authentication is configured, returns total requests count in the last full minute")

- [Deutsch (German)](../de/README.md)
- [한국어 (Korean)](../ko/README.md)

## Impulsado por

* [Lasta Di](https://github.com/lastaflute/lasta-di "Lasta Di"): Contenedor DI
* [LastaFlute](https://github.com/lastaflute/lastaflute "LastaFlute"): Framework Web
* [Lasta Job](https://github.com/lastaflute/lasta-job "Lasta Job"): Programador de Tareas
* [Fess Crawler](https://github.com/codelibs/fess-crawler "Fess Crawler"): Rastreador Web

     */
    long createTime();

    /**
     * Gets the last modified time.
     *
     * @return the last modified time in milliseconds since epoch
     */
    long lastModified();

    /**
     * Gets the last access time.
     *
     * @return the last access time in milliseconds since epoch
     */
    long lastAccess();

    /**
     * Gets the file size.

- [Deutsch (German)](../de/README.md)
- [한국어 (Korean)](../ko/README.md)

## Alimenté par

* [Lasta Di](https://github.com/lastaflute/lasta-di "Lasta Di") : Conteneur DI
* [LastaFlute](https://github.com/lastaflute/lastaflute "LastaFlute") : Framework Web
* [Lasta Job](https://github.com/lastaflute/lasta-job "Lasta Job") : Planificateur de tâches
* [Fess Crawler](https://github.com/codelibs/fess-crawler "Fess Crawler") : Crawler Web

- [Deutsch (German)](../de/README.md)
- [한국어 (Korean)](../ko/README.md)

## Desenvolvido por

* [Lasta Di](https://github.com/lastaflute/lasta-di "Lasta Di"): Contêiner DI
* [LastaFlute](https://github.com/lastaflute/lastaflute "LastaFlute"): Framework Web
* [Lasta Job](https://github.com/lastaflute/lasta-job "Lasta Job"): Agendador de Tarefas
* [Fess Crawler](https://github.com/codelibs/fess-crawler "Fess Crawler"): Rastreador Web