// a large number of users
	r, err := ies.client.Get(cctx, basePrefix, etcd.WithPrefix())
	if err != nil {
		return err
	}

	// Parse all users values to create the proper data model
	for _, userKv := range r.Kvs {
		if err = ies.getUserKV(ctx, userKv, userType, m, basePrefix); err != nil && err != errNoSuchUser {
			return err
		}
	}
	return nil
}

{* ../../docs_src/query_params/tutorial005_py39.py hl[6:7] *}

Here the query parameter `needy` is a required query parameter of type `str`.

If you open in your browser a URL like:

```
http://127.0.0.1:8000/items/foo-item
```

...without adding the required parameter `needy`, you will see an error like:

```JSON
{
  "detail": [
    {

            return;
        }

        try {
            String result = parseJvmConfig(jvmConfigPath, mavenProjectBasedir);
            if (outputFile != null) {
                // Write directly to file - this ensures proper file handle cleanup on Windows
                // Add newline at end for Windows 'for /f' command compatibility
                try (Writer writer = Files.newBufferedWriter(outputFile, StandardCharsets.UTF_8)) {

  - *apiserver_cache_list_fetched_objects_total*: Counter of objects read from watch cache in the course of serving a LIST request, broken down by resource_prefix and index_name
  - *apiserver_cache_list_evaluated_objects_total*: Counter of objects tested in the course of serving a LIST request from watch cache, broken down by resource_prefix

{% for sponsor in sponsors.gold -%}
<a href="{{ sponsor.url }}" target="_blank" title="{{ sponsor.title }}"><img src="{{ sponsor.img }}" style="border-radius:15px"></a>
{% endfor -%}
{%- for sponsor in sponsors.silver -%}
<a href="{{ sponsor.url }}" target="_blank" title="{{ sponsor.title }}"><img src="{{ sponsor.img }}" style="border-radius:15px"></a>
{% endfor %}
{% endif %}

<!-- /sponsors -->

    OVERREPORTING_SIZE_LIST = unmodifiableList(new MisleadingSizeList<>(collection123, 1));
  }

  /*
   * c.g.c.collect.testing.Helpers.misleadingSizeList has a broken Iterator, so we can't use it. (I
   * mean, ideally we'd fix it....) Also, we specifically need a List so that we trigger the fast
   * path in join(Iterable).
   */

 *
 * <p>The job supports selective crawling by specifying configuration IDs for different
 * types of crawlers (web, file, data). It manages the crawler process lifecycle,
 * handles timeout scenarios, and ensures proper cleanup of resources.</p>
 *
 * <p>Key features:</p>
 * <ul>
 *   <li>Concurrent crawler process management with configurable limits</li>
 *   <li>Selective crawling based on configuration IDs</li>

```mermaid
graph LR

browser("Navegador")
proxy["Proxy en http://0.0.0.0:9999/api/v1/app"]
server["Servidor en http://127.0.0.1:8000/app"]

browser --> proxy
proxy --> server
```

/// tip | Consejo

- Connection pooling with limits
- Background temp file deletion via `FileUtil.deleteInBackground()`

**Fault Tolerance**:
- `FaultTolerantClient` wrapper (retry, circuit breaker)
- Graceful degradation (e.g., robots.txt parsing continues on errors)

---

## Key Components

### Crawler (`Crawler.java`)

Main orchestrator for crawling operations.

**Key Methods**:
```java

    private static Stream<Arguments> provideNamesForWriteTest() {
        return Stream.of(Arguments.of("SERVER", 0x20, "CLIENT", 0x00), Arguments.of("WORKSTATION", 0x00, "USER", 0x03),
                Arguments.of("DOMAIN", 0x1B, "BROWSER", 0x1D), Arguments.of("A", 0x20, "B", 0x00),
                Arguments.of("VERYLONGNAMETEST", 0x20, "ANOTHERLONGNAME", 0x00));
    }

    @Test