-Time Server Status Monitoring and Server Log Customization 9. Support for server-side commands (SSI) 10. supports Secure Socket Layer (SSL) 11, user session process tracking 12, FastCGI13, assumervlets3, and www.apache.org-apache official website # yum Install httpd * -- install httpd service # httpd-t -- Check Configuration File correctness # rm-rf/etc/httpd/conf. d/welcome. conf -- delete the welcome page. Because httpd-manual is installed, you can access http: // ServerIp/manual 4 and run in
This test instructions is disgusting to me Baidu. Look at the small leisurely write *_* understandThe cost of transporting individual goods is calculated independently, so they can be handled separately#include #include#include#includeusing namespacestd;Const intinf=0x7f7f7f7f;Const intmaxn=100008;Const intmaxm= -;structfuck{intU,v,cap,next,cost;} EDGE[MAXN];inthead[maxm4];intTol;intMPN[MAXM][MAXM],MPM[MAXM][MAXM],MPCOST[MAXM][MAXM][MAXM];voidinit ()
-threaded Web server for multiplexing I/O: one process responds to n requests; starts m processes; Number of requests processed simultaneously: N*M4. Main program:/USR/SBIN/HTTPD MPM Mode Default/usr/sbin/httpd.event/usr/sbin/httpd.workerHTTPD feature Mpm:multipath processing module (multi-path processing)Prefork: A multi-process model in which each process responds to a request, has good stability, but has limited concurrency, generates multiple idle
CentOS7has been provided in the imagehttpd2.4of therpmPackage,httpd2.4relative tohttpd2.2There is a big improvement inCentOS6only through theApacheThe official website provides the source code package to compile the installation. httpd2.4 new features:MPM Support Run DOS mechanism;Support Event MPM ;Support asynchronous read and write;Support each module and each directory to use the respective log level;per request configuration; Enhanced version of
How Apache works in 2:1.prefork modeThe secondary multi-path processing module (MPM) implements a non-threaded, pre-derived Web server. It is suitable for systems that do not have a thread-safe library and need to avoid thread-compatibility issues, and it is the best mpm that requires each request to be handled independently, so that if a request has a problem it does not affect other requests.This
"/etc/httpd" →apachePidfile Run/httpd.pid→apache will generate a PID when it starts.Timeout 60→ receive and send time-out is 60sKeepAlive off→ Long Connection (build handshake, channel always in), OFF here to identify the short connection, long connection performance is good, but the disadvantage is also obvious, the thread and threads pool between the existence of a connection thread is not used when the connection is still there, then other threads, Unable to connect to the thread pool, causi
"How Apache Works"Prefork Mode (default)This multi-path processing module (MPM) implements a non-threaded, pre-derived Web server that works in a similar way to Apache 1.3. It is suitable for systems that do not have a thread-safe library and need to avoid threading compatibility issues. It is the best mpm to require each request to be independent of each other, so that if a request has a problem it will no
Apache Website Service BasicsApache servers can run on a variety of operating system platforms such as Linux,unix,windows. The server program that is based on the code of the original Web service program is modified. Apache server performance in terms of features, performance and security are more prominent, mainly open source code, cross-platform applications, support a variety of web programming voice, modular design, stable operation, good security.New version of httpd-2.4 features:New module
Apache is a common Web service-side tool, called HTTPd on Linux, and the service name is httpd;On CentOS 6 default comes with httpd2.2 version, 7 on the default is 2.4 version;2.4 HTTP Support uses the event model (each thread corresponds to a client request);Before compiling the installation, you need to determine the APR, and Apr-util is already installed, you need to set the APR installation path when compiling and installing Apr-util--with-apr=/some/path# MKDIR/SRC//Create a directory to sto
First, HTTP Service Foundation 1.1 Web communication basic Concept 1.1.1 ArchitectureBased on B/s architecture, is actually a derivative version of C/S architecture.1.1.2 PrincipleWeb page available on the service sideBrowser downloads and displays Web pagesPort number: 80/tcp1.1.3 ProtocolHyper Text Markup Language (HTML) Hypertext Markup LanguageHyper Text Transfer Protocol (HTTP) Hypertext Transfer Protocol1.1.4 Server and ClientService side: httpd, Nginx, TomcatClient: ELinks, Firefox, IE, C
-2.4 version manually, because on CENTOS6, httpd-2.4 differs from httpd-2.0 and 2.2,httpd-2.4 with some new features,1) MPM support is loaded at runtime;--enable-mpms-shared=all--with-mpm={prefork|worker|event}2) Support for event MPM3) asynchronous read and write4) Use different log levels for each module and per directory5) per-request configuration;6) Enhanced version of Expression Analyzer7) Millisecond
The Apache Web ServiceInstalling Apache StepsThe first step is unpacking:[Email protected] ~]# TAR-XF httpd-2.4.32.tar.gz-c/usr/local/The second step is to switch in:[Email protected] ~]# cd/usr/local/httpd-2.4.32/The third step is to configure, compile, and compile the installation:[Email protected] httpd-2.4.32]#/configure--prefix=/usr/local/httpd--sysconfdir=/etc/httpd--enable-so-- Enable-ssl--enable-cgi--enable-rewrite--enable-zlib--enable-modules=most--enable-mpms-shared=most--with-
server's single-machine efficiency is the goal of the server developers. However, because the different operating system platform and computer hardware differences make the concurrency model does not have a common rule, on many platforms very good concurrency model to the other platform to become poor performance, and the same system platform but the tasks performed differently, the concurrency of the same concurrency model is very different ; therefore, the factors that affect concurrency perf
Introduction:
Apache is running the hardware environment is the most impact on performance factors, even if the hardware can not be upgraded, it is best to give Apache a separate host to avoid
Interference to other applications. Of the hardware indicators, the most impact on performance is memory, for static content (pictures, javascript files, CSS files, etc.)
It determines how much content Apache can cache, the more it caches, the less opportunity to read content on the hard disk, the larger m
/Connector ","Org. apache. catalina. connector. http. HttpConnector ","ClassName ");Digester. addSetProperties ("Server/Service/Connector ");Digester. addSetNext ("Server/Service/Connector ","AddConnector ","Org. apache. catalina. Connector ");
It is easy to understand here. It is the same as above. In the case of the Server/Service/Connector tag (this is simplified here, it should be the sub-tag Connector of the sub-tag Service under the tag Server, A bit of Interface), instantiate HttpConnecto
Write in frontApache configures multiple Tomcat to enable request triage, multiple Tomcat services to equalize load, and increased service reliability. Recently studied, encountered a lot of problems, record, convenient for later review, do not like Apache,nginx can also be done.Get readyVersion is very important, I was due to the version of the reason, has been errorLinux
Use # to lsb_release -a view the current Linux system version.
This example:CentOS Linux release 7.0.1406 (Cor
/server.xmlInstalling local configuration file:/usr/local/tomcat5.5/conf/tomcat-users.xmlInstalling local configuration file:/usr/local/tomcat5.5/conf/web.xml[Done]>> Creating log files ... [Done]>> creating symlink to Tools.jar ... [Done]
Step Fourth: Install Apache Web Server
[Root@freebsd ~] $ pkg_add-r Apache22
Fifth step: The integration of Apache Web Server and Tomcat
5.1 Prerequisite Component MOD_JK Installation
[ROOT@FREEBSD/USR/PORTS/W
Shardingamp; amp; HA-MySQLFabricWebinarReplay + Qamp; amp; A On 19th June 2014, mats Kindahl and I presented a free webinar on why and how you shoshould be using MySQL Fabric to add Sharding (scaling out reads writes) and High Availability to MySQL. the webinar replay is available here. this blog post uplodes a transcript of the questions raised during the live webinar together with the responses given-if you're questions aren' t answered already then please feel free to post them as comments h
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