sticky session

Sticky bag phenomenonA program (command Ls-l) that first makes a remote execution of commands based on TCP; lllllll; PwdRes=subprocess. Popen (Cmd.decode ('utf-8'), Shell=True,stderr=subprocess. Pipe,stdout=subprocess. PIPE) The result of the encoding is based on the current system, if it is windows, then Res.stdout.read () read out is GBK encoded, at the receiving end needs to use GBK decoding and can only read the results from the pipelineAfter exec

Iron Learning Python_day34_socket Module 2 and sticky-pack phenomenon socketsSocket is a computer network data structure, which embodies the concept of "communication endpoint" in C/s structure.Before any type of communication begins, a network application must create a socket.They can be compared to telephone jacks, without which they will not be able to communicate.Sockets are originally created for applications on the same host, allowing a program

Detailed description of sticky bit in Linux, linuxsticky File permissions in Linux In linux, each file and directory has its own access permission, which determines whether the user can access the file or directory and how to access it. The most well-known file or directory may have three permissions: read, write, and execute operations, which are not described here. After a file is created, the system grants the owner the read and write permissions b

TCP is a "flow" protocol, a complete package may be split into multiple packets by TCP to send, or the small package into a large packet sent, which is called the TCP sticky packet and unpacking problems.Sticky bag, unpacking problem descriptionAssuming that the client sends packets D1 and D2 to the server individually, the following 4 scenarios may exist because the number of bytes read by the server is indeterminate. 1. The service end poin

As we have said before, the sender can be a K-K to send the data, the receiving end of the application can be two K two k to extract the data, of course, it is possible to take 3 K or 6K data, or only a few bytes of data, that is, the application to see the data is a whole, or said to be a stream (stream), in the underlying communication, this data may be split into many packets to send, but the number of bytes of a packet is not visible to the application, so the TCP protocol is a stream-orient

SUID, SGID, and Sticky attributes of the file SUID attributesThe SUID attribute is generally used on an executable file. When a user executes the file, the user temporarily has the permission of the owner of the executable file. When you use the "ls-l" or "ll" command to browse a file, if the third digit of the executable file owner permission is a lowercase "s ", it indicates that the execution file has the SUID attribute. For example, the/usr/bin/pa

Original link http://blogold.chinaunix.net/u2/76620/showart_1134205.html Each file has an owner, indicating who created the file. At the same time, the file also has a group number, indicating the group to which the file belongs, generally the group to which the file owner belongs. If it is an executable file, the file generally only has the permission of the user who calls the file, while setuid and setgid can change this setting. Setuid: set to grant the file owner permissions during execution

First, what is sticky bagOnly TCP has sticky packet phenomenon, UDP will never sticky, why, and listen to my wordFirst, you need to master the principle of a socket transceiver message:The so-called sticky packet problem is mainly because the receiver does not know the boundary between the message, do not know how many

SceneIn a production environment, we often separate one of the Nexus switches from VPC domain, such as upgrades or disaster preparedness drills. But one of the details is that Sticky Master 's state is rarely noticed, so this can lead to network outages.In a VPC environment, both vpcs perform role elections, with priority configuration, assuming that n7k-1 is primary , N7k-2 is secondary .Step OneWhen we separate the n7k-2 from the VPC environment, th

One. Several realization ways of distributed session 1. Database-based session sharing 2. Shared file system based on NFS3. Based on the memcached session, how to ensure the high availability of the memcached itself.4. Session replication mechanism based on the RESIN/TOMCAT Web container itself5.

SUID: When running a program, the owner of the corresponding process is the owner of the program file itself, not the initiatorchmod u+s filename (add SUID permission) chmod u-s filename (except SUID permissions)If FILE itself has execute permission, then SUID is displayed as s; otherwise display S;passwd command has SUID permissions by defaultSGID: When running a program, the group of the corresponding process belongs to the group of the program file itself, not the initiator(After the director

New Features of AndroidEventBus: Adding sticky events and removing the need to manually log out of the event Bus I just read the new version AndroidEventBus v1.0.4 released by the author and found that many good things are added. The two biggest features are the addition of sticky events and manual logout events.AndroidEventBus github address: github The following is the

thread called Pthread_exitThere are 3 kinds of abnormal termination, they are6: Call Abort7: Received a signal and terminated8: Last thread responds to cancellation request2, Sticky bitThe Sticky bit is an access flag bit that can be used to mark files and paths. The most common usage is to set the sticky bit on the directory, so that only the owner or root of t

The permission to see a directory today is RWXRWXRWT is surprised what this t is, how is it not X or-? Search for the following discovery: This t represents the so-called sticky bit. Sticky bit: This bit can be understood as an anti-delete bit. Whether a file can be deleted by a user depends primarily on whether the group to which the file belongs has write access to the user. Without write pe

First, what is sticky bag1. Note: Only TCP has a sticky packet phenomenon, UDP will never stick packets2. The so-called sticky packet problem is mainly because the receiver does not know the boundary between the message, do not know how many bytes of data extracted at once.Two, two kinds of cases will occur sticky bag.

Sticky bagSticky bag phenomenonAfter executing multiple commands at the same time, the resulting results are likely to be only part of the result, and when other commands are executed, another part of the result of the previous execution is received, which is the sticky packet.The implementation of sticky packets based on TCP protocolServer Side##### #server End

(204800000). Decode ( ' GBK " )) Sk.close () Remote ClientRefers to the function of a module, the other is simple transceiver function.Res=subprocess. Popen (Cmd.decode ('utf-8'), Shell=True,stderr=subprocess. Pipe,stdout=subprocess. PIPE) The result of the encoding is based on the current system, if it is windows, then Res.stdout.read () read out is GBK encoded, at the receiving end needs to use GBK decoding and can only read the results from the pipeline attention--------------------

suid Meaning: The bit of the file is set to 1, and when the file is executed, the file will run as the owner, i.e. whoever comesExecute this file, he has the privileges of the owner of the file, if the owner is root, then the executor has SuperuserPrivilege, which is the bit that will become a security vulnerability, so do not set that bit easily.Sgid Meaning: The runner will have permissions for all groups of files.Bonding bit: Requires the operating system to retain the image of the program in

Java socket solves half-packet, sticky-packet problemFirst, the Java socket half packet, sticky problem reasons and solutions See blog: http://www.cnblogs.com/solq/p/4315763.html http://bbs.csdn.net/topics/250027309? page=2 http://blog.csdn.net/pi9nc/article/details/17165171 Second, Java socket half Pack, sticky solution 1, with special strings such as/R,/n as th

Article Title: Description of setuid, setgid, and sticky permissions. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. Each file has an owner, indicating who created the file. At the same time, the file also has a group number, indicating the group to which the file belongs, generally the group to which the file own