廣東什么是負(fù)載均衡代理商上海雪萊信息科技供應(yīng)-b2b網(wǎng)站_b2b電子商務(wù)平臺(tái)【買產(chǎn)品】-上?？谄蚴称酚邢薰?/title><meta name="description" content="? 虛擬服務(wù)－深信服AD設(shè)備對(duì)外發(fā)布的服務(wù)被稱為虛擬服務(wù)。虛擬服務(wù)包含了服務(wù)類型（協(xié)議）、節(jié)點(diǎn)池（一臺(tái)或多臺(tái)服務(wù)器的IP地址和端口的**）等配置屬性?？蛻舻脑L問請(qǐng)求通過網(wǎng)絡(luò)到達(dá)深信服AD設(shè)備，并匹配到虛擬服務(wù)后，再由AD設(shè)備按照設(shè)"><meta name="keywords" content="廣東什么是負(fù)載均衡代理商,負(fù)載均衡"><link rel="canonical" href="http://www.cdcfah.com/"/><meta name="applicable-device" content="pc"><link rel="shortcut icon" href="/static/new_net_01/images/favicon.ico"><link rel="stylesheet" href="/static/new_net_01/css/slick.css" /><link rel="stylesheet" href="/static/new_net_01/css/addnew.css"><link rel="stylesheet" href="/static/new_net_01/css/sidenav.css"><link rel="stylesheet" href="/static/new_net_01/css/style.css" /><link rel="stylesheet" href="/static/new_net_01/css/tab.css"><link rel="stylesheet" href="/static/new_net_01/css/404.css"> <meta name="baidu-site-verification" 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href="http://www.cdcfah.com/cp/third-aqfh_qtaqfhsb/">其他安全防護(hù)設(shè)備</a>?廣東什么是負(fù)載均衡代理商上海雪萊信息科技供應(yīng)</p><div id="bugpbc5" class="leftbox clearfix"><h1>廣東什么是負(fù)載均衡代理商上海雪萊信息科技供應(yīng)</h1><div id="zynsen8" class="proBig"><div id="ie35dx8" class="bigimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/heixiang4/637167061602539062/936592.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="fxgdx5d" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/heixiang4/637167061602539062/936592.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="fb3vimd" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價(jià)格要求：</span>面議</p><p><span>所在地：</span>上海市</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>廣東什么是負(fù)載均衡代理商,負(fù)載均衡</p><p><span>***更新：</span>2020-08-07 03:09:44</p><p><span id="click" >瀏覽次數(shù)：1次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="nya8ib1" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">上海雪萊信息科技有限公司</a></p><p><span>聯(lián)系人：</span>許經(jīng)理</p><p><span>郵箱: </span>846864328@qq.com</p><p><span>電話: </span>18621860861</p><p><span>傳真: </span>021_</p><p><span>網(wǎng)址: </span></p><p><span>手機(jī): </span>021-68072100</p><p><span>地址: </span>南匯新城鎮(zhèn)環(huán)湖西二路800號(hào)215室</p><p>[當(dāng)前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="5now3ym" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="s0lizd6" class="box"><p><p> <br /> </p> <p> <br /> </p> <p> ? 虛擬服務(wù)－深信服AD設(shè)備對(duì)外發(fā)布的服務(wù)被稱為虛擬服務(wù)。虛擬服務(wù)包含了服務(wù)類型（協(xié)議）、節(jié)點(diǎn)池（一臺(tái)或多臺(tái)服務(wù)器的IP地址和端口的**）等配置屬性?？蛻舻脑L問請(qǐng)求通過網(wǎng)絡(luò)到達(dá)深信服AD設(shè)備，并匹配到虛擬服務(wù)后，再由AD設(shè)備按照設(shè)定的負(fù)載均衡策略調(diào)度到真實(shí)服務(wù)器。 </p> <p> ? 會(huì)話保持－深信服AD設(shè)備提供有一種稱為會(huì)話保持（Session Persistence）的機(jī)制，可以識(shí)別客戶與服務(wù)器之間交互過程的關(guān)連性，在實(shí)現(xiàn)負(fù)載均衡的同時(shí)，還可保證一系列相關(guān)連的訪問請(qǐng)求會(huì)保持分配到同一臺(tái)服務(wù)器之上。在這種特定情況下，AD設(shè)備將放棄原有的負(fù)載均衡算法，廣東什么是負(fù)載均衡代理商。 </p> <p> ? IP地址庫(kù)－深信服AD設(shè)備內(nèi)置的IP地址庫(kù)收錄了不同運(yùn)營(yíng)商擁有的ISP地址段信息，廣東什么是負(fù)載均衡代理商，廣東什么是負(fù)載均衡代理商，以便鏈路負(fù)載均衡可以基于報(bào)文的源或目的IP地址查找IP地址庫(kù)，并得到對(duì)應(yīng)的運(yùn)營(yíng)商信息，再根據(jù)運(yùn)營(yíng)商信息為訪問流量選擇一條合適的ISP鏈路。深信服實(shí)現(xiàn)一個(gè)域名綁定多個(gè)運(yùn)營(yíng)商的公網(wǎng)地址。廣東什么是負(fù)載均衡代理商</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="廣東什么是負(fù)載均衡代理商,負(fù)載均衡" src="http://tyunfile.71360.com/UploadFile/heixiang4/637167061602539062/936592.jpg"></div><p> 內(nèi)網(wǎng)的用戶訪問互聯(lián)網(wǎng)訪問資源時(shí)，深信服AD接收到用戶的訪問流量后，通過預(yù)先設(shè)定鏈路負(fù)載策略將用戶訪問流量分配到不同的互聯(lián)網(wǎng)鏈路之上，實(shí)現(xiàn)出站流量負(fù)載均衡，提升互聯(lián)網(wǎng)鏈路帶寬利用率。 </p> <p> 深信服AD接收到內(nèi)網(wǎng)用戶訪問的流量以后，根據(jù)預(yù)先設(shè)定負(fù)載策略將訪問流量分配到指定的鏈路之上，并做源地址的NAT，（指定某一合法IP地址進(jìn)行源地址的NAT，或者用AD設(shè)備的接口地址自動(dòng)映射），保證數(shù)據(jù)包返回時(shí)能夠正確接收；同理，其它的訪問的流量會(huì)通過相應(yīng)策略會(huì)被分配到其它的鏈路之上。廣東什么是負(fù)載均衡代理商各條鏈路的帶寬存在差異，并且不同用戶發(fā)起的連接保存時(shí)長(zhǎng)差異較大。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="廣東什么是負(fù)載均衡代理商,負(fù)載均衡" src="http://tyunfile.71360.com/UploadFile/heixiang4/637172002901816407/1386815.png"></div><p> <br /> </p> <p> <br /> </p> <p> 通過多臺(tái)AD設(shè)備組成集群的方式，即可以擴(kuò)容整個(gè)系統(tǒng)的處理性能，并且充分利用集群中的每一臺(tái)設(shè)備，發(fā)布不同的服務(wù)，同時(shí)又能互為備份，保證故障發(fā)生時(shí)的**小業(yè)務(wù)中斷。即只要集群中仍有一臺(tái)設(shè)備可用，就不會(huì)導(dǎo)致任何一個(gè)服務(wù)停擺。在此基礎(chǔ)上，實(shí)現(xiàn)均衡的故障切換和動(dòng)態(tài)切換機(jī)制。 </p> <p> <br /> </p> <p> ? 高可用性集群 </p> <p> ? 多臺(tái)AD設(shè)備組成高可用性集群，支持主備、雙主、多主、M+N等多種模式 </p> <p> ? 與雙機(jī)模式相比，集群提供更高的冗余性（N備一 vs 一備一）和更低的成本控制（1+N vs 2×N）AD設(shè)備之間互為備份，同步會(huì)話鏡像（session mirror），發(fā)生切換不中斷業(yè)務(wù) </p><p style="text-indent:25px">基于七層內(nèi)容的調(diào)度機(jī)制，使得管理員可以通過應(yīng)用層的內(nèi)容交換來分配服務(wù)器資源，以實(shí)現(xiàn)用戶請(qǐng)求調(diào)度的多元化和個(gè)性化，業(yè)務(wù)應(yīng)用的場(chǎng)景十分多方位。例如，基于URI、HOST、COOKIE、USER_AGENT等HTTP頭部?jī)?nèi)容的匹配策略來選擇服務(wù)器，或者通過對(duì)HTTP頭部進(jìn)行請(qǐng)求改寫和應(yīng)答改寫，執(zhí)行頁(yè)面跳轉(zhuǎn)和丟棄等操作，實(shí)現(xiàn)不同業(yè)務(wù)系統(tǒng)之間的交互聯(lián)動(dòng)。在L7服務(wù)器負(fù)載均衡的場(chǎng)景中，AD設(shè)備先與客戶端建立TCP連接，獲取到訪問請(qǐng)求的報(bào)文之后，再根據(jù)報(bào)文中所帶的應(yīng)用層內(nèi)容來選擇合適的服務(wù)器并與之建立TCP連接，此時(shí)AD設(shè)備所扮演的角色類似于一臺(tái)代理服務(wù)器。節(jié)約企事業(yè)單位對(duì)通信鏈路的投資。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="廣東什么是負(fù)載均衡代理商,負(fù)載均衡" src="http://tyunfile.71360.com/UploadFile/heixiang4/637167061606250000/394821.jpg"></div><p style="text-indent:25px">信息化建設(shè)對(duì)各個(gè)組織機(jī)構(gòu)而言都是一項(xiàng)長(zhǎng)期的工作，硬件投資成本與性能回報(bào)是每個(gè)IT部門需要權(quán)衡的問題。有別于傳統(tǒng)的負(fù)載均衡設(shè)備，深信服AD應(yīng)用交付產(chǎn)品除了能實(shí)現(xiàn)服務(wù)器負(fù)載均衡機(jī)制，提高服務(wù)器資源的利用率之外，還支持TCP連接復(fù)用、內(nèi)存緩存、HTTP壓縮、SSL卸載等眾多性能優(yōu)化技術(shù)。通過減少服務(wù)器的硬件資源消耗，縮短服務(wù)器響應(yīng)時(shí)間，在節(jié)省了硬件投資成本的同時(shí)，有效地保障用戶訪問的速度和穩(wěn)定性，進(jìn)而提升用戶的訪問體驗(yàn)。內(nèi)置海外域名信息庫(kù)，根據(jù)用戶訪問的目標(biāo)域名進(jìn)行匹配。廣東什么是負(fù)載均衡代理商</p><p style="text-indent:25px">充分利用了多條鏈路帶來的可靠性保障，使對(duì)于用戶的訪問達(dá)到了**多方位的支持。廣東什么是負(fù)載均衡代理商</p><p style="text-indent:25px">面對(duì)愈加復(fù)雜的業(yè)務(wù)系統(tǒng)，主動(dòng)探測(cè)式的服務(wù)器健康檢查機(jī)制逐漸暴露出一定的局限性。尤其是在業(yè)務(wù)訪問涉及到多層應(yīng)用系統(tǒng)之間交互的情況下，當(dāng)中途某個(gè)環(huán)節(jié)出了問題時(shí)，無法直接針對(duì)業(yè)務(wù)流程是否正常進(jìn)行檢測(cè)。此外，主動(dòng)探測(cè)的方式對(duì)于未知協(xié)議、私有協(xié)議的應(yīng)用支持往往表現(xiàn)欠佳，無法對(duì)服務(wù)器的健康狀況做出準(zhǔn)確判斷。針對(duì)傳統(tǒng)方法的不足，深信服AD設(shè)備提供了一套基于服務(wù)器健康度的彈性調(diào)控機(jī)制，可通過監(jiān)控業(yè)務(wù)流中的TCP傳輸異常來衡量服務(wù)器節(jié)點(diǎn)的有效性，嘗試對(duì)性能不足的服務(wù)器臨時(shí)開啟過載保護(hù)，動(dòng)態(tài)調(diào)節(jié)服務(wù)器的負(fù)載，進(jìn)而保障整個(gè)業(yè)務(wù)系統(tǒng)的高可用性。廣東什么是負(fù)載均衡代理商</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/833788.html</p></div></div></div></div></div><div id="zsp3pid" class="page-right twoColRt"><div id="d33qnl3" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="j38jhpv" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img 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