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Optimize files caching

This commit is contained in:
antao 2018-10-15 15:58:11 +08:00
parent 944c981393
commit 4ac5544a54
2 changed files with 51 additions and 34 deletions
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2
drogon_ctl/templates/config.csp
View File

@ -87,7 +87,7 @@
"use_sendfile": true, "use_sendfile": true,
//use_gzip:true by default,use gzip to compress the response body's content; //use_gzip:true by default,use gzip to compress the response body's content;
"use_gzip": true, "use_gzip": true,
//static_files_cache_time:5 by default,the time in which static file response is cached, //static_files_cache_time:5 (seconds) by default,the time in which static file response is cached,
//0 means cache forever,the negative value means no cache //0 means cache forever,the negative value means no cache
"static_files_cache_time":5 "static_files_cache_time":5
} }

83
lib/src/HttpAppFrameworkImpl.cc
View File

@ -710,39 +710,6 @@ void HttpAppFrameworkImpl::onAsyncRequest(const HttpRequestPtr &req, const std::
LOG_INFO << "file query!"; LOG_INFO << "file query!";
std::string filePath = _rootPath + path; std::string filePath = _rootPath + path;
std::shared_ptr<HttpResponseImpl> resp = std::make_shared<HttpResponseImpl>(); std::shared_ptr<HttpResponseImpl> resp = std::make_shared<HttpResponseImpl>();
//check last modified time,rfc2616-14.25
//If-Modified-Since: Mon, 15 Oct 2018 06:26:33 GMT
if (_enableLastModify)
{
struct stat fileStat;
LOG_TRACE << "enabled LastModify";
if (stat(filePath.c_str(), &fileStat) >= 0)
{
LOG_TRACE << "last modify time:" << fileStat.st_mtime;
struct tm tm1;
gmtime_r(&fileStat.st_mtime, &tm1);
std::string timeStr;
timeStr.resize(64);
auto len=strftime((char *)timeStr.data(), timeStr.size() , "%a, %d %b %Y %T GMT", &tm1);
timeStr.resize(len);
std::string modiStr = req->getHeader("If-Modified-Since");
if (modiStr == timeStr && !modiStr.empty())
{
LOG_TRACE << "not Modified!";
resp->setStatusCode(HttpResponse::k304NotModified);
if (needSetJsessionid)
{
resp->addCookie("JSESSIONID", session_id);
}
callback(resp);
return;
}
resp->addHeader("Last-Modified", timeStr);
resp->addHeader("Expires", "Thu, 01 Jan 1970 00:00:00 GMT");
}
}
//find cached response //find cached response
HttpResponsePtr cachedResp; HttpResponsePtr cachedResp;
{ {
@ -756,6 +723,56 @@ void HttpAppFrameworkImpl::onAsyncRequest(const HttpRequestPtr &req, const std::
} }
} }
} }
//check last modified time,rfc2616-14.25
//If-Modified-Since: Mon, 15 Oct 2018 06:26:33 GMT
if (_enableLastModify)
{
if (cachedResp)
{
if (cachedResp->getHeader("Last-Modified") == req->getHeader("If-Modified-Since"))
{
resp->setStatusCode(HttpResponse::k304NotModified);
if (needSetJsessionid)
{
resp->addCookie("JSESSIONID", session_id);
}
callback(resp);
return;
}
}
else
{
struct stat fileStat;
LOG_TRACE << "enabled LastModify";
if (stat(filePath.c_str(), &fileStat) >= 0)
{
LOG_TRACE << "last modify time:" << fileStat.st_mtime;
struct tm tm1;
gmtime_r(&fileStat.st_mtime, &tm1);
std::string timeStr;
timeStr.resize(64);
auto len = strftime((char *)timeStr.data(), timeStr.size(), "%a, %d %b %Y %T GMT", &tm1);
timeStr.resize(len);
std::string modiStr = req->getHeader("If-Modified-Since");
if (modiStr == timeStr && !modiStr.empty())
{
LOG_TRACE << "not Modified!";
resp->setStatusCode(HttpResponse::k304NotModified);
if (needSetJsessionid)
{
resp->addCookie("JSESSIONID", session_id);
}
callback(resp);
return;
}
resp->addHeader("Last-Modified", timeStr);
resp->addHeader("Expires", "Thu, 01 Jan 1970 00:00:00 GMT");
}
}
}
if (cachedResp) if (cachedResp)
{ {
if (needSetJsessionid) if (needSetJsessionid)