Http://hi.baidu.com/sunsunsoso/blog/item/b197d6a63193718fd0435814.html
Recently, I have been working on the preliminary design of a project. Considering the system expansion and performance problems in the future, I have also found many solutions, one of them is to use the database cache tool memcached (of course, this tool is not limited to the database cache ). Let's briefly introduce what memcached is.
Memcached is a high-performance, distributed memory object cache system that reduces databa
The main content of this article is the installation steps of RABBITMQ "installation on Windows system and Linux" and the simple use of the client.1. Download: http://www.rabbitmq.com/download.html2. Install the 2.1 installation on WindowsinstallationErlangDownload Erlang: Http://www.erlang.org/download/otp_win64_17.3.exeInstallation:Erlang installation is complete.2.2 Installation Installing RabbitMQ RABB
This article describes how to use ftplib to implement a simple FTP client in Python. The example analyzes the settings and usage skills of the ftplib module, for more information about how to use ftplib to implement a simple FTP client, see the example in this article. Share it with you for your reference. The specific
The previous section demonstrates how to use nodejs and jqm to build a simple server that supports CRUD operations on applications (see node. js + jquery Mobile to build a simple Mobile web (server )), the server uses nodejs technology and the mongodb database and the lightweight web development framework expressJS. The routes use the restful style, so you can also use restify for development.
.mongoDBhttp://api.mongodb.org/js/Database and collection naming conventions
Should all lowercase
Maximum of 64 bytes
The database name cannot have the same name as the existing system reserved library, such as admin,local, and config
Such collection names are also legal, but individuals do not recommend the use ofDb-text, but not through DB. [DocumentName] got, to be changed to Db.getcollection (DocumentName)Because the db-text will be treated as a subtraction operation.Mo
Protocolas with the server, it is implemented through this class. Let's look at a short routine:
From Twisted.internet.protocol import protocol from
SYS import stdout
class Echo (protocol):
def DataReceived (self, data):
stdout.write (data)
In this program, it is simply the output of the obtained data to the standard output to display, there are many other events did not make any response, the followingThere is an example that responds to other events:
From Twisted.
invocation succeeds, call() returns the value in true and SRV. Otherwise, call() returns the value in False and SRV.Open ~/catkin_ws/src/beginner_tutorials/cmakelists.txt, copy the following code to the end of the file, save, exit: Add_executable (add_two_ints_server src/add_two_ints_server.cpp) target_link_libraries (Add_two_ints_server ${ Catkin_libraries}) add_dependencies (Add_two_ints_server beginner_tutorials_gencpp) add_executable (add_two_ints_ Clie
resolves a JSON object using Nsjsonserialization:Java code
ID jsonobj = [nsjsonserialization jsonobjectwithdata:responsedata
Options:nsjsonreadingallowfragments error:err];
ID jsonobj = [nsjsonserialization JSONObjectWithData:responseDataoptions:NSJSONReadingAllowFragments error:err ];The Jsonobj object structure of the parsing is different depending on the social network Service, please refer to the developer website of different service for detailed parameters.Here we i
Collect and organize the code, simple implementation of the weather and QQ online query. For reference only, welcome to shoot bricks.
/*generate at Sun, Jan 2009 13:46:27 +0000
Don ' t Modify me!
Cache Name Citys
Key:a5819c80f61198eabf3d3ffceec595de
*/
$Citys =array (
54511 = ' Beijing ',
58367 = ' Shanghai ',
54517 = ' Tianjin ',
57516 = ' Chongqing ',
45005 = ' Hong Kong ',
4
Simple socket client and multi-thread server implementationIn the afternoon, you can try to simplify the implementation. Welcome to the discussion.Client:Package com. XiongYi. client;Import java. io .*;Import java.net .*;Public class Client ...{Public static void main (String [] args) throws IOException ...{Final Strin
I learned scanf and printf in C language. In fact, understanding socket is similar to the two input and output, but it is just information transmission.
1. Default function call sequence of the TCP Server:
According to the above call order, we can write the simplest "Hello World" server program.
1 # include
2. The client corresponds to the server. The call sequence is as follows:
The corresponding "Hello World"
TortoiseSVN client simple tutorialSimple use of client TortoiseSVN
1. First download tortoisesvn software (http://tortoisesvn.net/downloads.html) corresponding to svn version from the website this case to download the latest 64-bit 1.9.7 and Chinese package, the Red Arrow refers to the Language Pack and help documentation.
Click renew for another website.
of execution prompt:[Email protected] hwserver]#./hwserver./hwserver:error while loading shared libraries:libzmq.so.5:cannot open Shared object file:no such file or directoryAfter checking the Internet, we found that Zeromq's Lib path was not added to ld.so.conf.Reference: http://blog.csdn.net/guoyilongedu/article/details/17450815Add the libzeromq.so path to the Tao Ld.so.conf, the following steps:Go to etc under cd/etcEdit ld.so.conf, sudo vim ld.so.confJoin Libzmq.so's Path/usr/local/zeromq/l
A client-defined variable is always used by a person, so a member variable defined as a class does not produce dirty data, and access to member variables is a thread that is manipulated by one person. You can use member variables whenever possible.
Java Server program is concurrent, it is possible that the number of concurrent is more than 100, the background of the program is multi-person multi-threaded access, so reduce the definition of business
This article describes the Android programming implementation of simple UDP Client. Share to everyone for your reference, specific as follows:
The code is debugged inside the 4.2.2 through
1. Remember to add permission
Note: After Android 4.0, you can't communicate with the main thread, or you will throw an exception.
2. Code
Mainactivity.java:
Package mao.example.quicksend;
Import an
Php is simple and practical to obtain the client ip address. Php obtains the client ip address. it is simple and practical to use functiongetOnlineIP () {$ cipgetenv (HTTP_CLIENT_IP); $ xipgetenv (response); $ ripgetenv (REMOTE_ADDR); $ srip $ _ php obtains the client ip
Fu
This article mainly introduces a simple udp broadcast server and client implemented by Nodejs. This article provides the implementation code directly. If you need it, you can refer to nodejs to send udp broadcast, write a server to receive broadcast data. The Code is as follows:
The Code is as follows:
Var dgram = require ("dgram ");
Var server = dgram. createSocket ("udp4 ");
Server. on ("error", functi
1) Create a GitHub accountLogin to https://github.com, just the user name, registered email and login password can register one of their own GitHub (after the need to confirm in the registration mailbox, very much like this way of registration, simple and safe). It can then be accessed via the URL of the github.com/user name .2) Installing the GitHub Windows clientClient: https://windows.github.com/After installation, you will get two applications:3)
As an echo, write a C + + version of the synchronous HTTP Post client feature, if you need a pure C version, step hereLinux Pure C Simple HTTP POST request client modelExplain the basic HTTP POST protocol
Implementation of TCP message boundaries through \ r \ n
The first paragraph of each request POST/A.B http/1.1
The method of POST HTTP,
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