Top "Publish-subscribe" questions

Publish/subscribe is a messaging pattern where senders (publishers) of messages do not program the messages to be sent directly to specific receivers (subscribers).

is latency and throughput in AWS SNS good enough to replace dedicated MQ for pub/sub?

For a sake of HA I'm considering switching from self hosted solution (ZeroMQ) to AWS Simple Notification Service for pub/…

amazon-web-services message-queue publish-subscribe zeromq
Best Publish/Subscribe "Middleware"

I'm in the market for a good open source network based Pub/Sub (observer pattern) library. I haven't found any …

soa observer-pattern middleware publish-subscribe mom
How does the messages-count example in Meteor docs work?

Having trouble full understanding this example from the docs... I tried running it a bunch of different ways so I …

javascript mongodb meteor publish-subscribe
java.lang.NoClassDefFoundError: com/google/common/base/MoreObjects when initializing pubsub on appengine

I try to run this code on appEngine (with java8 defined in my web.xml) public TopicName createTopic(final String …

java google-app-engine java-8 publish-subscribe google-cloud-pubsub
Redis Cluster vs ZeroMQ in Pub/Sub, for horizontally scaled distributed systems

If I were to design a huge distributed system whose throughput should scale linearly with the number of subscribers and …

redis publish publish-subscribe zeromq subscription
Real-time application newbie - Node.JS + Redis or RabbitMQ -> client/server how?

I am a newbie to real-time application development and am trying to wrap my head around the myriad options out …

apache node.js redis rabbitmq publish-subscribe
Understanding mqtt subscriber qos

I am new to MQTT and I just learned about the meaning of the QOS level that is decided when …

publish-subscribe mqtt qos
Redis: how (or should) I delete pubsub channels

In my app I dynamically create new pubsub channels and there might be too many like 5k per day. According …

memory redis publish-subscribe
ROS: subscribe function does not recognize my callback method

I am receiving this error "error: no matching function for call to ‘ros::NodeHandle::subscribe(const char [24], int, <unresolved …

c++ publish-subscribe robot ros
"pubsub error INVALID_ARGUMENT" when creating a subscription to URL endpoint

Created a test topic on GC pubsub and can create pull subscriptions no problem but as soon as I try …

publish-subscribe google-cloud-pubsub