I am trying to answer few questions based on my experience on JMS. Answer 1:- JMS is Java Message Service API; it provides uniform interface for Java clients to access messaging framework. Beneath JMS API is a JMS compliant messaging provider, for example WebSphere MQ provider. JMS supports transport of a payload over any messaging … Read more
APNS is not 100% reliable. It is in most cases, but not 100%. It is also not as quick as a dedicated service you would offer. Sometimes, push messages take upwards of one minute to arrive. You need to consider these and take it into consideration in any design you come up with. If you … Read more
Popup doesn’t have tab id so you will get the error. You can use chrome.runtime.sendMessage and chrome.runtime.onMessage.addListener in that case. So in background.js chrome.runtime.sendMessage({ msg: “something_completed”, data: { subject: “Loading”, content: “Just completed!” } }); And in popup.js chrome.runtime.onMessage.addListener( function(request, sender, sendResponse) { if (request.msg === “something_completed”) { // To do something console.log(request.data.subject) console.log(request.data.content) } … Read more
It’s important to remember that an Endpoint, created by a Component (i.e. Endpoint Factory), can sit at either end of a Camel Route. If you put the Component at the start of a route then there must be an implementation of the Consumer part of the Component. This does the work of converting the specific … Read more
MMS is just a htttp-post request. You should perform the request using extra network feature : final ConnectivityManager connMgr = (ConnectivityManager)context.getSystemService(Context.CONNECTIVITY_SERVICE); final int result = connMgr.startUsingNetworkFeature( ConnectivityManager.TYPE_MOBILE, Phone.FEATURE_ENABLE_MMS); If you get result with Phone.APN_REQUEST_STARTED value, you have to wait for proper state. Register BroadCastReciver and wait until Phone.APN_ALREADY_ACTIVE appears: final IntentFilter filter = new IntentFilter(); … Read more
MPI was deisgned tightly-coupled compute clusters with fast, reliable networks. Spread and ØMQ are designed for large distributed systems. If you’re designing a parallel scientific application, go with MPI, but if you are designing a persistent distributed system that needs to be resilient to faults and network instability, use one of the others. MPI has … Read more
Usually I use very simple approach to memorize something. I will provide all details below, but here is a simple picture of BasicProperties field and values. I’ve also tried to properly highlight queue/server and application context. If you want me to enhance it a bit – just drop a small comment. What I really want … Read more
I’ll separate this into points I hope will make sense. I might be re-hashing a bit of what I have written in The Hitchhiker’s Guide to Concurrency. You might want to read that one to get details on the rationale behind the way message passing is done in Erlang. 1. Message transmission Message passing in … Read more
“Warm-up” in Java is generally about two things: (1): Lazy class loading: This can be work around by force it to load. The easy way to do that is to send a fake message. You should be sure that the fake message will trigger all access to classes. For exmaple, if you send an empty … Read more