小编mra*_*ted的帖子

com.google.apphosting.api.ApiProxy$ApiDeadlineExceededException: The API call memcache.Get() took too long to respond and was cancelled.

这样处理Memcache错误的最佳方法是什么？我假设memcache调用(而不是数据存储区调用)如果由于某种原因失败则会返回null,因为当从缓存中删除缓存项时,总是可以得到null结果.

我正在考虑用自己的方法包装memcache调用来捕获异常并返回null.有更好的想法吗？

编辑:我现在看到你可以设置错误处理程序.LogAndContinueErrorHandler应该是默认值,但不清楚究竟是什么设置/正在使用.这似乎是可行的方式.

编辑:这是完整的堆栈跟踪:

com.google.apphosting.api.ApiProxy$ApiDeadlineExceededException: The API call memcache.Get() took too long to respond and was cancelled.
    at com.google.apphosting.runtime.ApiProxyImpl$3.createDeadlineException(ApiProxyImpl.java:318)
    at com.google.appengine.tools.development.TimedFuture.get(TimedFuture.java:44)
    at com.google.common.util.concurrent.ForwardingFuture.get(ForwardingFuture.java:63)
    at com.google.appengine.api.utils.FutureWrapper.get(FutureWrapper.java:90)
    at com.google.appengine.api.memcache.MemcacheServiceImpl.quietGet(MemcacheServiceImpl.java:28)
    at com.google.appengine.api.memcache.MemcacheServiceImpl.get(MemcacheServiceImpl.java:51)
    at mikelike.account.Account.getPrivateBoardsFromCache(Account.java:1110)
    at org.apache.jsp.inc.dialogs.pin_005fdialog_jsp._jspService(pin_005fdialog_jsp.java:77)
    at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
    at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:390)
    at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
    at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
    at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)
    at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:418)
    at org.mortbay.jetty.servlet.Dispatcher.include(Dispatcher.java:192)
    at org.apache.jasper.runtime.JspRuntimeLibrary.include(JspRuntimeLibrary.java:968)
    at org.apache.jsp.inc.header_jsp._jspService(header_jsp.java:145)
    at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
    at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:390)
    at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
    at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182) …