FastAPI implements some SSE best practices out of the box.

* Send a **"keep alive" `ping` comment** every 15 seconds when there hasn't been any message, to prevent some proxies from closing the connection, as suggested in the [HTML specification: Server-Sent Events](https://html.spec.whatwg.org/multipage/server-sent-events.html#authoring-notes).
* Set the `Cache-Control: no-cache` header to **prevent caching** of the stream.

    this.state.markReady();
  }

  /**
   * Registers a {@link Listener} to be {@linkplain Executor#execute executed} on the given
   * executor. The listener will not have previous state changes replayed, so it is suggested that
   * listeners are added before any of the managed services are {@linkplain Service#startAsync
   * started}.
   *
   * <p>{@code addListener} guarantees execution ordering across calls to a given listener but not

      return Arrays.copyOfRange(array, start, end);
    }

    @GwtIncompatible @J2ktIncompatible private static final long serialVersionUID = 0;
  }

  /**
   * This is adapted from the regex suggested by {@link Double#valueOf(String)} for prevalidating
   * inputs. All valid inputs must pass this regex, but it's semantically fine if not all inputs

- Removed misleading `SuggestFor` entries from `kubectl wait` so that it is no longer suggested when users type `kubectl list` or `kubectl ps` ([#137266](https://github.com/kubernetes/kubernetes/pull/137266), [@kfess](https://github.com/kfess)) [SIG CLI and Testing]

- kube-apiserver: a new `--requestheader-uid-headers` flag allows configuring request header authentication to obtain the authenticating user's UID from the specified headers. The suggested value for the new option is `X-Remote-Uid`. When specified, the `kube-system/extension-apiserver-authentication` configmap will include the value in its `.data[requestheader-uid-headers]` field. ([#115834](https://github.com/kubernetes/kubernetes/pull/115834),...

                    logger.debug("Failed to update suggest index.", e);
                }
                exitCode.set(1);
            }
        }

        logger.info("Replacing new suggest index.");
        suggestHelper.suggester().switchIndex();

        logger.info("Removing old indices.");
        suggestHelper.suggester().removeDisableIndices();

        return exitCode.get();
    }

**Index Lifecycle:**
```java
suggester.createIndexIfNothing();      // Initial setup
suggester.createNextIndex();            // Create new index
// ... indexing operations ...
suggester.switchIndex();                // Switch to new index
suggester.removeDisableIndices();       // Cleanup old indices
```

**Async Operations:**
```java
suggester.suggest()
    .setQuery("search")
    .execute()

        Suggester suggester = createSuggester();

        // Multiple consecutive calls should be safe
        suggester.createIndexIfNothing();
        suggester.createIndexIfNothing();
        suggester.createIndexIfNothing();

        // Should still be able to use the index
        suggester.refresh();
        assertEquals("Index should work normally", 0, suggester.getAllWordsNum());
    }

import org.codelibs.fess.suggest.Suggester;
import org.codelibs.fess.suggest.concurrent.Deferred;
import org.codelibs.fess.suggest.constants.SuggestConstants;
import org.codelibs.fess.suggest.entity.SuggestItem;
import org.codelibs.fess.suggest.exception.SuggestIndexException;
import org.codelibs.fess.suggest.index.contents.querylog.QueryLog;
import org.codelibs.fess.suggest.index.contents.querylog.QueryLogReader;

### Refactors

* 🔥 Remove unused NoneType. PR [#10774](https://github.com/tiangolo/fastapi/pull/10774) by [@tiangolo](https://github.com/tiangolo).

### Docs

* 📝 Tweak default suggested configs for generating clients. PR [#10736](https://github.com/tiangolo/fastapi/pull/10736) by [@tiangolo](https://github.com/tiangolo).

### Internal