domain socket

A file system is a subsystem that manages persistent data in the operating system, providing data storage and access capabilities. For server developers, the focus is on the UNIX (Linux) environment of the file system, such as partition and disk

1, modify the user process can open the number of files limitOn a Linux platform, regardless of whether you write a client or a service-side program, the highest concurrency is limited by the number of files that can be opened by the system at the

UNIX Domain sockets introduction UNIX domain sockets are used to communicate between processes running on the same machine. Although Internet domain sockets can be used for the same purpose, UNIX domain sockets are more efficient.UNIX domain sockets

Linux system logsServer commissioning and maintenance require a professional log system. Linux provides a daemon (SYSLOGD) to handle the system log, and now it is using its upgraded version (RSYSLOGD) on the Linux system.The RSYSLOGD daemon can

Inter-process Communication modeHow data is passed1.pipeMust be used between related processes, usually with "ls | grep abc "and so on, that's what this is," | " My guess is that two system calls are implemented, one is pipe (popen), the other is

MongoDB Start Command mongod parameter descriptionThe main parameters of Mongod are:Basic Configuration-------------------------------------------------------------------------------- --quiet # quiet Output --port

PostgreSQL Error:Psql:could not connect to server:no such file or directory is the server running locally and accepting C Onnections on Unix domain socket "/tmp/.s.pgsql.5432"?1. May be the service does not start, the following 3 start mode:(1)

One, view directory and file commands CD Change Directory (1) Cd/usr/bin(2) Cd. (.: current directory,...: top-level directory )(3) CD/(4) Cd ~ ( user home directory )2.ls Listing Directory contentsContents: Blue, plain file: Black,

Original link: http://www.orlion.ga/1072/Each process has a different user address space, the global variables of any one process can not be seen in another process, so the exchange of data between processes must pass through the kernel, a buffer in

Socket sockets and pipelines can also provide in-process communication. But sockets are better, and different processes can span different hosts (in plain words, support network communication). Well-known programs that use sockets: Telnet, Rlogin,

The Ps.ubuntu comes with a NETCAT-OPENBSD version with no-c/-e parameters.PSS. Online markdown Editor Bug What's going on ... the "#" sign still shows# #参数Want to connect to a place:nc [-options] hostname port[s] [ports] …Bind port waits for

The virtual terminal in Linux is so-called virtual, because it is physically still a software console on this machine, rather than a real remote physical terminal, but the virtual terminal is actually more unified in the implementation, which is

1. When mysql-h 127.0.0.1, using TCP/IP connectivity, MySQL server considers the connection to be from 127.0.0.1 or "Localhost.localdomain" 2. When mysql-h localhost, it is not connected with TCP/IP and uses UNIX sockets; At this time, MySQL server

Linux Network Programming (41 episodes total)explain Linux network programming knowledge, divided into the following four chapters. TCP/IP basics of Linux network programmingLinux Network Programming socket programming ChapterInter-process

As we all know, PostgreSQL is a free object-relational database server (database management system), is a free access to the open source database system. In this paper, the PostgreSQL database server-side listening settings and client connection

We are familiar with the value of information exchange, how the process of communication between the network, such as we open the browser every day to browse the Web page, how the browser process with the Web server communication? When you chat with

Installation section 1. installation package1.1 mongodb-orgThe following four packages can be installed automatically1.2 Mongodb-org-serverMongod processes and configuration files, launching scripts1.3 Mongodb-org-mongosMONGOs process1.4 Mongodb-org-

Through the Curl functionCurl function library in PHP (Client URL library function) Curl_close-closes a Curl sessioncurl_copy_handle-copies all the contents and parameters of a Curl connection resourcecurl_errno-returns a numeric number containing

The socket way does not go to the TCP layer, TCP way will go to the IP layer. Therefore, theoretically, the socket connection method is more efficient.Comparison of TCP and UNIX domain sockets TCP is using TCP ports to connect 127.0.0.1:9000

After upgrading OS X Yosemite Today, start postgesql times the following error:...Fatal:could not open Directory "Pg_twophase": No such file or directoryis the server running locally and acceptingConnections on Unix domain socket "/tmp/.s.pgsql.5432"