golang pubsub

Wxpython learning] using the pubsub mechanism to update views Recently, I was busy working on a tool to generate xml packets for testing. In this tool, I have several panels that exist at the same time. One panel is used to manage data dictionaries. It can be edited. Other panels contain a display of these data dictionaries and cannot be edited. They reflect the same data source. At the same time, this tool can also import the transaction table accord

Pub/Sub publish and subscribe, pubsub publish and subscribeRelated commandsPSUBSCRIBEPUBLISHPUBSUBPUNSUBSCRIBESUBSCRIBEUNSUBSCRIBEPub/SubSUBSCRIBE, UNSUBSCRIBE and PUBLISH implement the Publish/Subscribe messaging paradigm where (citing Protocol) senders (publishers) are not programmed to send their messages to specific receivers (subscribers ). rather, published messages are characterized into channels, without knowledge of what (if any) subscribers

First, using the array cache Subscriber subscription message, when the Subscriber subscribes to the message, push the subscription message to the queue of the specified message, and when the publisher publishes the message, we traverse the execution push to the specified message queue for the callback event.varPubsub= (function(){ vareventobj={}; return{subscribe:function(EVENT,FN) {eventobj[event]=fn}, publish:function(event) {if(Eventobj[event]) eventobj[event] (); }, off:function(EVENT,FN)

Redis source code analysis (30th) --- pubsub publish and subscribe Mode Today I learned the term "Publish and subscribe mode" in Redis, which was first introduced to JMS (Java Message Service) java Message Service. I subscribe to these types of messages. Only when these types of messages are broadcast and sent Will I filter other messages directly, this ensures an efficient transmission efficiency. Next, let's take a look at how Redis achieves this pu

In recent time, the development of message bus feature was postponed, and some time was spent to optimize and reconstruct the original pubsub mechanism. Here is a record of the optimization process and how it has changed compared to the original design.The role of pubsub within the message busPubSub is primarily used within the message bus for real-time control of all online clients. Each client in the use

NANOMSG Experiment--pubsubThe Publish subscription model is a common feature provided by many message middleware. The message mechanism enables the message publisher and the message to receive (consume) peopleTo decouple. PubSub mode is also one of the message models directly supported by NANOMSG, so through the PubSub model experiment,At the same time, we also have a general understanding of the basic usag

Today, I learned about the tall noun in Redis, "Publish subscription Mode", the word Publish subscription mode was heard in the JMS (Java message Service) Java Messaging Service when I first heard about it. This ranking in a popular point of saying, is that I subscribe to this type of message, when only this kind of message broadcast sent, I will, other messages directly filtered to ensure an efficient transmission efficiency. Let's cut to the chase and learn how Redis implements this publish su

client that subscribed to the event. In this article, we will create an event each time a user is created, and a new service will be created to send e-mail. We're not really going to implement the email feature, just simulate it. # # code First, we need to integrate the NATS proxy plug-in into our User services: ' go//shippy-user-service/main.gofunc maIn () {...//Init'll parse the command line Flags.srv.Init ()//Get instance of the broker using our defaultspubsub: = SR V.server (). Options ().

PrefaceThis is my blog park the first article, write not in place, I hope you guys understand.I have been engaged. NET development work, recently in learning Golang, so think about the process of learning before not how to properly record the learning process. Deeply sorry!Now will golang the learning bit record share, nonsense to this, enter the text below.Note: The development platform for this article an

The more useful third-party open source Redisclient in Golang are: Go-redis Source Address: Https://github.com/go-redis/redis Document Address: Http://godoc.org/github.com/go-redis/redis Redigo Source Address: Https://github.com/gomodule/redigo Document Address: Http://godoc.org/github.com/gomodule/redigo/redis Two are very good redisclient library, is also the Redis official on-line recommendat

This is a creation in Article, where the information may have evolved or changed. Environment System: Linux (Don't ask why, because Windows Golang does not support dynamic libraries)Golang Version: 1.5 support dynamic library, more than 1.8 support plugin Plug-in code The plugin code is no different from the normal Golang module code, mainly the package must be m

This is a creation in Article, where the information may have evolved or changed. Win7 (64-bit) under Eclipse Configuration Golang Development Debugging environment 1. Download the Golang Toolkit (which you can think of as Java-like JDK), I download the 64-bit installation package here: 2. Install the Golang Toolkit (one "next"), install completed at the comma

Golang Learning Notes Golang type conversion finishing go language string, int, int64, float64, complex convert each other #string到intInt,err:=strconv. Atoi (String)#string到int64Int64, err: = StrConv. parseint (String, 10, 64)#int到stringString:=strconv. Itoa (int)#int64到stringString:=strconv. Formatint (int64,10) #int到int64, turn int into a string and then turn to int64, return with the Err parameter need t

for range, the values of the matcher and feed variables are locked at the same time as the arguments passed into the anonymous function closure. When you use closures to access external variables, ask yourself how this variable will change, and how this change affects the operation of the closure. Resources: Http://devs.cloudimmunity.com/gotchas-and-common-mistakes-in-go-golang/index.html#closure_for_it_vars http://studygolang.com/articles

We know that the local variable initialization method in Golang (using ": =" to create and assign values) makes it convenient to use variables. However, this is also one of the places where mistakes are easy to make. In particular, this initializer also supports the initialization of multiple variables at the same time, and more particularly, it also supports the original variable assignment and new variable creation and assignment at the same time! T

In the grammar (i), we learn the basic elements of the basic data types, variables, constants, and so on in go, and in this section we will learn how to organize these elements and eventually write code that can be executed.In this section include:The Process Control statement in go;The use of functions in go;Go special error handling method;Process Control statements in the GolangIn the specific programming, it is necessary to use some special statements to implement certain functions, such as

Golang basics and golang Basics1. Inheritance overload is not supported. For example, for C ++ Java interfaces, modification of interfaces will affect the modification of class behavior of the entire interface to be modified. Go designers think this feature may be useless. 2. Any function definition must be followed by curly brackets after the function declaration and cannot be wrapped in a line break such

Golang File Reading implementation method, golang File ReadingRead files Put the Read file in file/test: that is, the test file under the file package. Write more files in it. Method 1: Use ioutil. ReadFile to directly read from the file to [] byte func Read0() (string){ f, err := ioutil.ReadFile("file/test") if err != nil { fmt.Println("read fail", err) } return string(f)} Method 2: rea

Golang Learning Note 19 using Golang to implement Ethereum token transfer In the Ethereum blockchain, we call tokens tokens, which are digital assets that everyone in the Ethereum blockchain can freely distribute. And it must follow the ERC20 standard, as for the ERC20 standard, you can refer to this article Https://theethereum.wiki/w/index.php/ERC20_Token_Standard It's actually a smart contract co

* * This article is the first Golang language learning tutorial **# What is golang?************* personally think the novice to the true characteristics of the lack of understanding, characteristics and so on in the real learning can really understand. So the following conceptual things need only a general understanding. *go language is a brand-new programming language launched by Google, which makes it eas