Please be considerate of your servers and their operators as you roll out this release. Compression
saves bandwidth but it costs CPU and memory! If you run into a problem you may need to adjust or
disable the `permessage-deflate` compression settings on your server.

Note that OkHttp won't use compression when sending messages smaller than 1 KiB.

 *  Fix: Don't crash when the URL hostname contains an underscore on Android.

		writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)
		return
	}
}

// RestoreConfigHistoryKVHandler - restores a config with KV settings for the given KV id.
func (a adminAPIHandlers) RestoreConfigHistoryKVHandler(w http.ResponseWriter, r *http.Request) {
	ctx := r.Context()

	objectAPI, _ := validateAdminReq(ctx, w, r, policy.ConfigUpdateAdminAction)

    /** Session manager for handling HTTP session operations. */
    @Resource
    protected SessionManager sessionManager;

    /** Configuration manager for Fess application settings. */
    @Resource
    protected FessConfig fessConfig;

    /** Helper for managing user activity logging and tracking. */
    @Resource
    protected ActivityHelper activityHelper;

            this.inputLocation = inputLocation;
            return this;
        }

        /**
         * Builds a new XmlNode instance with the current builder settings.
         *
         * @return a new immutable XmlNode instance
         * @throws NullPointerException if name has not been set
         */
        public XmlNode build() {

<!DOCTYPE components PUBLIC "-//DBFLUTE//DTD LastaDi 1.0//EN"
	"http://dbflute.org/meta/lastadi10.dtd">
<components>
	<component name="searchEngineClient" class="org.codelibs.fess.opensearch.client.SearchEngineClient">
		<property name="settings">
			{"http.cors.enabled":"true",
			 "http.cors.allow-origin":"*",
			 "discovery.type":"single-node",
			 "cluster.allocator.existing_shards_allocator.batch_enabled":"true",
			 <!--
			 "node.name":"search_engine",

## 型別和驗證

這些環境變數只能處理**文字字串**，因為它們是位於 Python 範疇之外的，必須與其他程式和作業系統的其餘部分相容（甚至與不同的作業系統相容，如 Linux、Windows、macOS）。

這意味著從環境變數中讀取的**任何值**在 Python 中都將是一個 `str`，任何型別轉換或驗證都必須在程式碼中完成。

你將在[進階使用者指南 - 設定和環境變數](./advanced/settings.md)中了解更多關於使用環境變數處理**應用程式設定**的資訊。

## `PATH` 環境變數

有一個**特殊的**環境變數稱為 **`PATH`**，作業系統（Linux、macOS、Windows）用它來查找要執行的程式。

`PATH` 變數的值是一個長字串，由 Linux 和 macOS 上的冒號 `:` 分隔的目錄組成，而在 Windows 上則是由分號 `;` 分隔的。

                if (numberOfReplicas > 0) {
                    source = "{\"settings\":{\"index\":{\"number_of_shards\":" + numberOfShards
                            + ",\"number_of_replicas\":0,\"auto_expand_replicas\":\"0-" + numberOfReplicas + "\"}}}";
                } else {
                    source = "{\"settings\":{\"index\":{\"number_of_shards\":" + numberOfShards + ",\"number_of_replicas\":"

    /** Pager for paginating web authentication results */
    @Resource
    private WebAuthPager webAuthPager;
    /** Service for accessing and modifying web configuration settings */
    @Resource
    protected WebConfigService webConfigService;

    // ===================================================================================

For example, let's say that you want to use <a href="https://github.com/ijl/orjson" class="external-link" target="_blank">`orjson`</a>, but with some custom settings not used in the included `ORJSONResponse` class.

Let's say you want it to return indented and formatted JSON, so you want to use the orjson option `orjson.OPT_INDENT_2`.

Bạn sẽ học thêm về việc sử dụng biến môi trường để xử lí **các thiết lập ứng dụng** trong [Hướng dẫn nâng cao - Các thiết lập và biến môi trường](./advanced/settings.md){.internal-link target=_blank}.

## Biến môi trường `PATH`

Có một biến môi trường **đặc biệt** được gọi là **`PATH`** được sử dụng bởi các hệ điều hành (Linux, macOS, Windows) nhằm tìm các chương trình để thực thi.