zeromq

I work on a trading engine where at the time of run, I get the log from the engine.log like the following, 2018_01_02_03_28_20_684 INFO ZMQCommunicatorService REMOTE_EXECUTOR_MARKET_ADMIN-ALL_MARKETS-0-5 - no jzmq in java.library.path, sleeping 2 minutes then try again 2018_01_02_03_28_20_697 INFO ZMQCommunicatorService ENGINE_MARKET_ADMIN-ALL_MARKETS-0-4 - Could not initialize class org.zeromq.ZMQ, sleeping 2 minutes then try again 2018_01_02_03_30_20_696 INFO ZMQCommunicatorService REMOTE_EXECUTOR_MARKET_ADMIN-ALL_MARKETS-0-5 - Could not initialize class org.zeromq.ZMQ, sleeping 2 minutes

I'm attempting to use the ZMQ draft specs ZMQ_RADIO and ZMQ_DISH . I built libzmq and cppzmq with CMake ExternalProject and and the flag ENABLE_DRAFTS=ON and verified it was built with drafts using the zmq_has() function. I modified the standard hello world example to use radio and dish and cannot get them to talk. I also get compilation errors that ZMQ_RADIO and ZMQ_DISH are undefined. I defined them manually and it compiles but I never get an actual connection so it seems like something else is wrong. Here's my code: CMakeLists.txt cmake_minimum_required(VERSION 2.8.11) project(zmq_udp)

目录 一、消息中间件相关知识... 1 1、概述... 1 2、消息中间件的组成... 1 3 消息中间件模式分类... 2 4 消息中间件的优势... 3 5 消息中间件应用场景... 4 6 消息中间件常用协议... 6 7 常见消息中间件MQ介绍... 7 7.1 RocketMQ.. 7 7.2 RabbitMQ.. 7 7.3 ActiveMQ.. 8 7.4 Redis. 8 7.5 Kafka. 8 7.6 ZeroMQ.. 9 8、主要消息中间件的比较... 9 二、部署RabbitMq. 10 1、安装一些依赖... 10 2、因为rabbitmq是基于erlang环境的，所以要先安装erlang环境... 10 3、安装rabbitMQ.. 11 一、消息中间件相关知识 1、概述 消息队列已经逐渐成为企业IT系统内部通信的核心手段。它具有低耦合、可靠投递、广播、流量控制、最终一致性等一系列功能，成为异步RPC的主要手段之一。当今市面上有很多主流的消息中间件，如老牌的ActiveMQ、RabbitMQ，炙手可热的Kafka，阿里巴巴自主开发RocketMQ等。 2、消息中间件的组成 2.1 Broker 消息服务器，作为server提供消息核心服务 2.2 Producer 消息生产者，业务的发起方，负责生产消息传输给broker， 2.3 Consumer

Closed. This question is off-topic . It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 2 years ago . It's a long time that I'm prototyping the network libraries for our MMO game which it's back-end is in c++ and the client uses Unity3d. I've used ZeroMQ, It's a very strong and awesome library but it doesn't have an official port for c# with .Net 3.5, So I can not use it with unity properly in the client and it also does not have the RUDP support. I've checked ENet, It's basically an RUDP messaging library, but

I need to send an object (serialized with GPB) on a ZMQ socket. Currently the code have an extra copy. How do I directly write serialized array into message_t s data? ABT_CommunicationProtocol introPacket; // Fill the packet message_t introMessage; size_t dataLenght = introPacket.ByteSize(); char* temp = new char[dataLenght]; introPacket.SerializeToArray(temp, dataLenght); // write data to temp memcpy(introMessage.data(), temp, dataLenght); // copy data to message this->serverRquest.send(introMessage); Don't use zmq_send but zmq_sendmsg int cgi_msg_cnx_pool::PbToZmq(::google::protobuf::Message

You could find the program here I am building a program in message passing framework 0MQ. I try to implement what I posted in here Program compiled with g++ -std=c++11 test.cpp -o test -lzmq -lpthread . To run the program, pass one parameter as the thread number you would like to have. That parameter is then assigned to variable worker_num . In main thread, I setup thread with: vector<thread> pool; for(int i = 0; i < worker_num; i++) { cout << "main() : creating thread, " << i << endl; pool.push_back(thread(task1, (void *)&context, i)); } I would like to make sure all worker threads have

I'm building a POC leveraging ZeroMQ N-to-N pub/sub model. From our app server, when a http request is serviced, if the thread pulls data from the database, it updates a local memcache instance with that data. To synchronize other memcache instances in the app server cluster, the request thread sends a message with the data using a ZMQ publisher...so the question is: What strategy is the most effective with respect to minimizing socket create/destory overhead when the application has many threads that depend on sockets for sending messages? Do we share a pool of sockets, do we create/destroy