erlang model

original articles, reproduced please specify the Source: Server non-amateur research http://blog.csdn.net/erlib author SunfaceContact e-mail: [Email protected]SSH DaemonERLANG/OTP comes shipped with an SSH implementation that can both act as a server and a client. Part of it was a demo application providing a remote shell working in ERLANG.to get the usually need to has your keys to has access to SSH stuff remotely on place already, but for Qu Ick test purposes, you can get the things working by

(Sasl,system Administration Support libriaries) will be responsible for error logging and overload protection. Using Gen_server, gen_supervisor,application and other behaviors, you can build a system with a reliability of 99.9999999. Unified Erlang Message: 1 abstract The difference between the different line protocols2 Erlang message without parsing, the receiving process does not need to resolve the m

One: Variable 1. The variable "single assignment" in Erlang means that the variable can only be assigned one time.2. Variables must begin with a "capital letter". Two: Atoms An atom is equivalent to an enumeration type in C + +, but the value of an atom in Erlang is itself. Atoms are a string that starts with "lowercase letters," but if you use single quotes, the name of the atom doesn't matter, and a l

* Make sure there are no compilation warnings * In Erlang, string is implemented by list. In 32-bit systems, the space of one character is 8 bytes (four values are saved and four pointer values are saved ). Therefore, the string speed is slow and the space usage is large. * On the server, you always try your best to write tail-recursive functions. * When '+ +' is used, the left list will be copied and added to the right list header. Therefore, it is b

http://blog.chinaunix.net/xmlrpc.php?r=blog/articleuid=25876834id=3300393Because in my work, the server Erlang and the client flash communication is to send binary data (protocol) to communicate, Erlang processing binary data is really convenient, in the free time to view and translate Erlang binary related to some of the documentation, There are, of course, plac

Citation: http://cryolite.iteye.com/blog/15472521. Binary data can be shared between different processesOf course, these processes are all on the same Erlang node.This is different from ordinary term, which is to be copied in the receiving process as the message passes between processes (of course atom data exceptions, they are not copied). Pick a piece of text here:All data in messages between Erlang proce

An experiment was conducted in windows. Erlang shell is used to create 0.6 million Erlang processes, occupying more than 760 MB of memory. On average, each process occupies 1.27 KB of memory and the creation time of each process is about 4 microseconds. On a Linux server with much better configuration, use pthread to start a thread. The average creation time of each thread is 48 microseconds. Check the info

Erlang itself provides an interface that can be used to check whether the module has an export function. This interface is Erlang: function_exported/3, but this interface is often unavailable. The problem is reproduced below: 1> erlang:function_exported(crypto,start,0).false2> crypto:start().ok3> erlang:function_exported(crypto,start,0).trueNote: The example does not mean that you must crypto: Start () to u

One, assignment time matching Atom Match Copy Code code as follows: Atom = Atom% atom Another = another% another Atom = another% exception error variable Matching Copy Code code as follows: Var = 2. % 2 Var = 3-1. % 2 Var = 1. % exception Error tuple Match Copy Code code as follows: Attr = {name, Sloger}. % {name, sloger} {name, name} = Attr. % {name, sloger} Name. % Sloger List Matching Copy Code code as

1. ETS and Dets Introduction: ETS (Erlang term Storage) and Dets (Dist ETS) are system modules that Erlang uses to efficiently store large numbers of Erlang data entries. ETS vs. Dets: Same: Both ETS and Dets provide large "key-value" search tables. Different: ETS resides in memory and Dets resides on the hard disk. The ETS storage is temporary and the data store

Beginner Erlang, when compiling the. erl file, Tip: >1 C (some_module) ./some_module.erl:none:no such file or directory Error This is because the. erl file is not being caused in the current working directory of Erlang. Enter the following function in the Erlang shell to get the current working directory: >1 pwd (). You can switch the working directory usin

Recently, I started to access Erlang, which is deeply attracted by it. Of course, I have to have an environment for learning. I have installed the Erlang development environment without hesitation. The installation is very simple. Download The Source Code directly. The traditional three-step installation: ./configure./makesudo make install The installation is successful. The installation directory is/usr/l

A brief description of OTP in Erlang and a brief description of ErlangOTP OTP contains a set of libraries and implementation methods to build large-scale, fault-tolerant, and distributed applications. It contains many powerful tools to implement H248, SNMP, and other protocols, the core concept is OTP behavior. It can be seen as an application framework that uses callback functions as parameters, similar to a J2EE container. The callback function is r

Original blog address, Http://www.linkedin.com/pulse/garbage-collection-erlang-tianpo-gao?trk=prof-post.This article will simply describe the garbage collection of Erlang, which is not an in-depth discussion.When performing a partial garbage collection, the garbage collector only recycles the younger generation and moves the old generation to the old-time dedicated heap. When an

WhatsApp has used Erlang in the production environment to run to 96GB memory stand-alone 3M long connection, participate in: WhatsApp Erlang world. After all, the business level can reach WhatsApp that very little, now only tens, single too many hanging one too much impact, and there is no multi-line access, each room has to throw so several machines, so 1M can meet the requirements.Erlang has a natural adv

Recently, Erlang + MongoDB has been used in the company's webGame project. there is no way to learn about the project. To learn this, you must have an environment at least. Today, we will record it by setting up the development environment, and we will still develop it under ubuntu. By the way, if you do development, you 'd better choose linux, because there are many... Recently, Erlang + MongoDB has been u