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    <p>Alexandre, <br>
    </p>
    <p>aqui na UFSCar lançamos o portal da universidade sem uso de
      servidor de cache. Depois de um mês verificamos que todos os dias
      a partir das 16h o portal ficava sobrecarregado (grande consumo de
      memória e uso de cpu). Configuramos o varnish no servidor e o
      problema foi resolvido. Além de diminuir o consumo de memória e
      uso de cpu, o cache aumentou o número de respostas aos acessos
      simultâneos que praticamente derrubavam o servidor.<br>
    </p>
    <p>Passado um tempo, descobrimos que a origem do problema era uma
      rotina de um aplicativo para celular, desenvolvido pelos alunos,
      que às 16h acessa o portal para consultar o cardápio do
      restaurante universitário.<br>
    </p>
    Abraço<br>
    <br>
    Silvio<br>
    <br>
    <div class="moz-cite-prefix">Em 26/07/2018 11:54, Alexandre Chagas
      escreveu:<br>
    </div>
    <blockquote type="cite"
cite="mid:CAJO4qpFO4KeVr6BxZ630jVe2=9i+eJYvavZ0imh8exdToKC+cA@mail.gmail.com">
      <meta http-equiv="content-type" content="text/html; charset=utf-8">
      <div dir="ltr">Muito legal, Clayton :)
        <div><br>
        </div>
        <div>Principalmente no exemplo que relatastes quanto a
          importância do servidor de cache, com a opinião do grupo,
          possuo mais embasamento em favor desse argumento.</div>
        <div><br>
        </div>
        <div>E os links, obrigado.</div>
        <div><br>
        </div>
        <div>Forte abraço,</div>
        <div><br>
        </div>
        <div>Alexandre Chagas.</div>
      </div>
      <div class="gmail_extra"><br>
        <div class="gmail_quote">Em 26 de julho de 2018 11:40, Clayton <span
            dir="ltr"><<a href="mailto:claytonc.sousa@gmail.com"
              target="_blank" moz-do-not-send="true">claytonc.sousa@gmail.com</a>></span>
          escreveu:<br>
          <blockquote class="gmail_quote" style="margin:0 0 0
            .8ex;border-left:1px #ccc solid;padding-left:1ex">
            <div dir="ltr">
              <div>Alexandre,</div>
              <div><br>
              </div>
              <div>Só para complementar[1]. <br>
              </div>
              <div><br>
              </div>
              <div>Seria bom você acompanhar os acesso com o google
                analytics[2] e webmasters[3].</div>
              <div><br>
              </div>
              <div>[1] <a
                  href="https://www.similarweb.com/website/ana.gov.br"
                  target="_blank" moz-do-not-send="true">https://www.similarweb.com/<wbr>website/ana.gov.br</a><br>
              </div>
              <div>[2] <a href="https://analytics.google.com"
                  target="_blank" moz-do-not-send="true">https://analytics.google.com</a><br>
              </div>
              <div>[3] <a
                  href="https://www.google.com/intl/pt-BR/webmasters"
                  target="_blank" moz-do-not-send="true">https://www.google.com/intl/<wbr>pt-BR/webmasters</a></div>
              <div><br>
              </div>
              <div>abraços,</div>
              <div>Clayton<br>
              </div>
              <div><br>
              </div>
            </div>
            <div class="HOEnZb">
              <div class="h5"><br>
                <div class="gmail_quote">
                  <div dir="ltr">Em qui, 26 de jul de 2018 às 11:30,
                    Clayton <<a
                      href="mailto:claytonc.sousa@gmail.com"
                      target="_blank" moz-do-not-send="true">claytonc.sousa@gmail.com</a>>
                    escreveu:<br>
                  </div>
                  <blockquote class="gmail_quote" style="margin:0 0 0
                    .8ex;border-left:1px #ccc solid;padding-left:1ex">
                    <div dir="ltr">
                      <div>Alexandre,</div>
                      <div><br>
                      </div>
                      <div>Se fosse um portal estático até concordaria
                        em partes com a infraestrutura a falta de um
                        servidor de cache.<br>
                      </div>
                      <div>Mas o servidor de cache é essencial em
                        portais dinâmicos independente da tecnologia,
                        conforme os acessos aumentam mais memoria é
                        consumida.</div>
                      <div>Agora se o pessoal da infraestrutura não
                        quiser instalar um servidor de cache (Varnish)
                        vai ter que colocar mais máquinas.</div>
                      <div>Ocorreu um caso parecido comigo que também
                        não queriam colocar um servidor de cache e não
                        era Plone, precisava de 10 máquinas físicas
                        parrudas para aquentar a carga do dia, elas
                        ficavam 100% CPU e de memoria, após a instalação
                        do varnish caiu para 2 maquinas virtuais e a
                        carga não passa dos 40% da sua capacidade.</div>
                      <div><br>
                      </div>
                      <div>abraços,</div>
                      <div><br>
                      </div>
                      <div>Clayton<br>
                      </div>
                      <div><br>
                      </div>
                      <div><br>
                      </div>
                    </div>
                    <br>
                    <div class="gmail_quote">
                      <div dir="ltr">Em qui, 26 de jul de 2018 às 10:53,
                        Alexandre Chagas <a
                          href="mailto:alexandre.acs@gmail.com"
                          target="_blank" moz-do-not-send="true">alexandre.acs@gmail.com</a>
                        [zope-pt] <<a
                          href="mailto:zope-pt@yahoogrupos.com.br"
                          target="_blank" moz-do-not-send="true">zope-pt@yahoogrupos.com.br</a>>
                        escreveu:<br>
                      </div>
                      <blockquote class="gmail_quote" style="margin:0 0
                        0 .8ex;border-left:1px #ccc
                        solid;padding-left:1ex">
                        <div>
                          <span style="font-weight:bold;font-size:14px">[<a
                              style="text-decoration:none"
href="#m_6694694538527866386_m_-4995943502867876293_m_1000269164368263916_TopText"
                              moz-do-not-send="true">Anexos</a> de
                            Alexandre Chagas incluídos abaixo]</span>
                          <br>
                          <br>
                          <div dir="ltr">Bom dia pessoal, aos feras de
                            infraestrutura ;)
                            <div><br>
                            </div>
                            <div>Gostaria de saber a opinião/ajuda de
                              vocês quanto a um problema num de nossos
                              servidores:
                              <div><br>
                              </div>
                              <div>sou Alexandre e trabalho na ANA -
                                Agência Nacional de Águas ;) </div>
                              <div><br>
                              </div>
                              <div>O servidor em questão, é do portal
                                principal da Agência.</div>
                              <div><br>
                              </div>
                              <div>
                                <div
style="font-size:small;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial">-
                                  Servidor Linux"Debian" com cerca de
                                  140 GB de disco e 16 GB de RAM, </div>
                                <div
style="font-size:small;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial">-
                                  Instalação Plone (IDG) zeo com duas
                                  instâncias, basicamente não há outros
                                  serviços instalados neste servidor.</div>
                                <br>
                                <div>
                                  <div>* Um breve resumo quanto a
                                    instalação: (instalei o Plone puro
                                    4.3.11) e depois, via buildout
                                    instalei o brasil.gov.portal)
                                    pronto, simples e rápido, no ar há
                                    cerca de dois anos. funcionando bem
                                    até o momento.</div>
                                  <div><br>
                                  </div>
                                  <div>Mensagem da nossa infraestrutura <br>
                                  </div>
                                  <div><br>
                                  </div>
                                  <div>>>>>></div>
                                  <div>
                                    <span
                                      style="font-size:11pt;font-family:Calibri,sans-serif">Prezados,<br>
                                      Analisando os indicadores do
                                      servidor SAPUCAÍ (Plone Produção –
                                      site ANA),
                                      notei que há  aumento constante do
                                      consumo de memória, independente
                                      do
                                      horário , logo o problema de
                                      estouro não tem relação com picos
                                      de consultas ou
                                      usuários no site , que varia em 24
                                      horas. Além disto nota-se um
                                      aumento
                                      repentino do consumo entre 18:00 e
                                      18:14 do dia 20/07. (Imagens em
                                      anexo).</span>
                                    <br>
                                  </div>
                                  <div><<<<<<br>
                                  </div>
                                  <div><br>
                                  </div>
                                  <div>Eu, quanto à nossa infra. </div>
                                  <div><br>
                                  </div>
                                  <div>- Um fator que sempre questionei
                                    foi e é, a falta de um servidor de
                                    CACHE instalado, a resposta da infra
                                    é que não precisa porque nosso
                                    portal não é tão grande assim.</div>
                                  <div><br>
                                  </div>
                                  <div>- Tento argumentar que por falta
                                    de cache, a busca no banco é
                                    constante, causando um consumo
                                    excessivo de memória. Dou-me com
                                    vencido! :( </div>
                                  <div><br>
                                  </div>
                                  <div>Então, possuímos esse servidor
                                    com haproxy, mas não há cacheamento
                                    sendo executado!</div>
                                  <div><br>
                                  </div>
                                  <div>Analisei os logs e não
                                    identifiquei nada de anormal, </div>
                                  <div>exceto no event.log de uma das
                                    instâncias, (anexo >
                                    print-server-log.jpg) onde
                                    identifiquei um evento estranho mais
                                    próximo ao horário indicado pela
                                    infra (entre 18:00 e 18:14), no logo
                                    indica 18:40. Por isso não acredito
                                    que este foi a causa.</div>
                                  <div><br>
                                  </div>
                                  <div>Não sei se ajuda, mas segue anexo
                                    os prints enviados pela infra. <br>
                                  </div>
                                  <div><br>
                                  </div>
                                  <div>Gostaria de saber a opinião de
                                    vocês quanto a necessidade de
                                    utilização de um servidor. E como
                                    proceder com estes aumentos
                                    repentinos de uso de memória.</div>
                                  <div><br>
                                  </div>
                                  <div>Desde já, agradecido por qualquer
                                    ajuda ;)</div>
                                  <div><br>
                                  </div>
                                  <div>-- <br>
                                  </div>
                                  <div>
                                    <div>
                                      <div>
                                        <div>
                                          <div
class="m_6694694538527866386m_-4995943502867876293m_1000269164368263916gmail_signature">
                                            <div dir="ltr">
                                              <div><b>Alexandre Chagas</b></div>
                                              <div
                                                style="color:rgb(102,102,102)"><br>
                                              </div>
                                            </div>
                                          </div>
                                        </div>
                                      </div>
                                    </div>
                                  </div>
                                </div>
                              </div>
                            </div>
                          </div>
                          <br>
                          <br>
                          <div width="1" style="color:white;clear:both">__._,_.___</div>
                          <p style="clear:both;padding:15px 0 3px 0"><span
style="color:#628c2a;font-weight:bold;font-size:14px"> Anexo(s) de
                              Alexandre Chagas </span> | <span
                              style="font-size:13px"><a
                                style="text-decoration:none"
href="https://br.groups.yahoo.com/neo/groups/zope-pt/attachments/143748755;_ylc=X3oDMTJxYnFjZWF1BF9TAzk3NDkwNDM3BGdycElkAzE2OTYzNjgEZ3Jwc3BJZAMyMTM3MTE0NjkxBHNlYwNhdHRhY2htZW50BHNsawN2aWV3T25XZWIEc3RpbWUDMTUzMjYxMzIwMQ--"
                                target="_blank" moz-do-not-send="true">Exibir
                                anexos na web </a></span></p>
                          <p style="clear:both;padding:15px 0 3px 0"><span
                              style="color:#628c2a;font-weight:bold"> 4
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style="clear:both;font-size:smaller;height:12px;overflow:hidden;text-align:center;width:72px">
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href="https://br.groups.yahoo.com/neo/groups/zope-pt/attachments/143748755;_ylc=X3oDMTJtdjBkNnExBF9TAzk3NDkwNDM3BGdycElkAzE2OTYzNjgEZ3Jwc3BJZAMyMTM3MTE0NjkxBHNlYwNhdHRhY2htZW50BHNsawNwaG90bwRzdGltZQMxNTMyNjEzMjAx?itemid=1712675314"
                                    title="print-server-log.jpg"
                                    target="_blank"
                                    moz-do-not-send="true">print-server-log.jpg</a></div>
                              </div>
                            </div>
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id="m_6694694538527866386m_-4995943502867876293m_1000269164368263916fromDMARC"
                              style="clear:both;margin-top:10px">
                              <hr
                                style="height:2px;border-width:0;color:#e3e3e3;background-color:#e3e3e3">
                              Enviado por: Alexandre Chagas <<a
                                href="mailto:alexandre.acs@gmail.com"
                                target="_blank" moz-do-not-send="true">alexandre.acs@gmail.com</a>>
                              <hr
                                style="height:2px;border-width:0;color:#e3e3e3;background-color:#e3e3e3">
                            </div>
                            <br>
                            <br>
                            <tt>
                              Para enviar uma mensagem: <a
                                href="mailto:zope-pt@yahoogrupos.com.br"
                                target="_blank" moz-do-not-send="true">zope-pt@yahoogrupos.com.br</a><br>
                              Para sair do grupo envie uma mensagem em
                              branco para: <a
                                href="mailto:zope-pt-unsubscribe@yahoogrupos.com.br"
                                target="_blank" moz-do-not-send="true">zope-pt-unsubscribe@<wbr>yahoogrupos.com.br</a></tt>
                            <br>
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                            <img
src="http://geo.yahoo.com/serv?s=97490435/grpId=1696368/grpspId=2137114691/msgId=23626/stime=1532613201"
                              moz-do-not-send="true" width="1"
                              height="1"> <br>
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id="m_6694694538527866386m_-4995943502867876293m_1000269164368263916ygrp-vital"
style="background-color:#f2f2f2;font-family:Verdana;font-size:10px;margin-bottom:10px;padding:10px">
                              <span
id="m_6694694538527866386m_-4995943502867876293m_1000269164368263916vithd"
style="font-weight:bold;color:#333;text-transform:uppercase"><a
href="https://br.groups.yahoo.com/neo/groups/zope-pt/info;_ylc=X3oDMTJlaHRxamR0BF9TAzk3NDkwNDM3BGdycElkAzE2OTYzNjgEZ3Jwc3BJZAMyMTM3MTE0NjkxBHNlYwN2dGwEc2xrA3ZnaHAEc3RpbWUDMTUzMjYxMzIwMQ--"
                                  style="text-decoration:none"
                                  target="_blank" moz-do-not-send="true">Visite
                                  seu Grupo</a></span>
                              <ul
                                style="list-style-type:none;margin:0;padding:0;display:inline">
                              </ul>
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                            <div
                              id="m_6694694538527866386m_-4995943502867876293m_1000269164368263916ft"
style="font-family:Arial;font-size:11px;margin-top:5px;padding:0 2px 0
                              0;clear:both"> <a
href="https://br.groups.yahoo.com/neo;_ylc=X3oDMTJkNmoyZjA4BF9TAzk3NDkwNDM1BGdycElkAzE2OTYzNjgEZ3Jwc3BJZAMyMTM3MTE0NjkxBHNlYwNmdHIEc2xrA2dmcARzdGltZQMxNTMyNjEzMjAx"
                                style="float:left" target="_blank"
                                moz-do-not-send="true"><img
src="http://l.yimg.com/ru/static/images/yg/img/email/new_logo/yahoo_groups_pt-BR_141x19.png"
                                  alt="Yahoo! Grupos" style="border:0"
                                  moz-do-not-send="true" width="141"
                                  height="19"></a>
                              <div style="color:#747575;float:right"> •
                                <a
                                  href="https://info.yahoo.com/privacy/br/yahoo/groups/details.html"
                                  style="text-decoration:none"
                                  target="_blank" moz-do-not-send="true">Privacidade</a>
                                • <a
href="mailto:zope-pt-unsubscribe@yahoogrupos.com.br?subject=Sair+do+grupo"
                                  style="text-decoration:none"
                                  target="_blank" moz-do-not-send="true">Sair
                                  do grupo</a> • <a
                                  href="https://info.yahoo.com/legal/br/yahoo/utos/terms/"
                                  style="text-decoration:none"
                                  target="_blank" moz-do-not-send="true">Termos
                                  de uso</a> </div>
                            </div>
                          </div>
                          <br>
                          <div style="color:white;clear:both">__,_._,___</div>
                        </div>
                      </blockquote>
                    </div>
                  </blockquote>
                </div>
              </div>
            </div>
            <br>
            -- <br>
            Comunidade Plone no Governo<br>
            Site: <a href="http://www.softwarelivre.gov.br/plone"
              rel="noreferrer" target="_blank" moz-do-not-send="true">http://www.softwarelivre.gov.<wbr>br/plone</a><br>
            Wiki: <a
              href="http://colab.interlegis.leg.br/wiki/PloneGovBr"
              rel="noreferrer" target="_blank" moz-do-not-send="true">http://colab.interlegis.leg.<wbr>br/wiki/PloneGovBr</a><br>
            Histórico: <a
href="http://colab.interlegis.leg.br/search/?type=thread&order=latest&list=plonegov-br"
              rel="noreferrer" target="_blank" moz-do-not-send="true">http://colab.interlegis.leg.<wbr>br/search/?type=thread&order=<wbr>latest&list=plonegov-br</a><br>
            Lista: <a
              href="https://listas.interlegis.gov.br/mailman/listinfo/plonegov-br"
              rel="noreferrer" target="_blank" moz-do-not-send="true">https://listas.interlegis.gov.<wbr>br/mailman/listinfo/plonegov-<wbr>br</a><br>
          </blockquote>
        </div>
        <br>
        <br clear="all">
        <div><br>
        </div>
        -- <br>
        <div class="gmail_signature" data-smartmail="gmail_signature">
          <div dir="ltr">
            <div><b>Alexandre Chagas</b></div>
            <div style="color:rgb(102,102,102)"><br>
            </div>
          </div>
        </div>
      </div>
      <br>
      <fieldset class="mimeAttachmentHeader"></fieldset>
      <br>
    </blockquote>
    <br>
    <pre class="moz-signature" cols="72">-- 
Silvio Marino

Departamento de WebSites e Hospedagem - DeWeb
Secretaria Geral de Informática - SIn
Universidade Federal de São Carlos - UFSCar
Telefone: (16) 3306-6470</pre>
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