I need to implement a SOAP Web service.
with many clients (over 4000 user online).
Service function is a DB access, and other web service access...
Which application server is better.
Glashfish, Weblogic, Oracle Application Server ...?
I'd suggest you first implement the Web service on an app server that you're experienced with (or a free one, like Glassfish or JBoss) and then stress test it. If you make it app. server agnostic, porting it to others, including the commercial ones, shouldn't be a problem.
It's usually best to just try out stuff like this for yourself because benchmarks won't always point you to the right direction.
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I am really new to web apps and web services... But i have created a webservice and it's working in localhost(apache glassfish) but i need to deploy this thing in an external se(in java)rver so that every one can consume that web service via my app..Unfortunately am unaware of this technique.
so can anybody help in this problem ? Can i host this webprogram in normal godaddy webserver or is there any other way for this..in fact, my app is a small one and i need the solution for small apps or startups
thank you
GlassFish hosting will be hard to find. If your application is not GlassFish specific and can be run on JBoss, then you might try RedHat OpenShift. They have free plan for small application load and you get for free server administration, database administration, deployment is easy, you might concentrate on coding only.
Another option is to use Heroku. You will also need to neglect GlassFish, but they have easy path to creation of REST web service backend.
I recommend renting a server at amazon:
http://aws.amazon.com/ec2/pricing/
You can take already existing images with GlassFish and a Database or take a naked CentOs/ Red Hat Image and install your GlassFish manually. The link provides a table with all prices. A m3.medium costs $0.070 per Hour. It's super fast and flexible and you have high availability.
In NetBeans you can deploy on a remote server via: Services -> Servers -> Add Server:
Just enter your ip, username and password for the GlassFish Server:
Or
You can host your Project on a Raspberry Pi. Maybe the power is enough for a small Web App:
http://www.thehecklers.org/2013/10/27/glassfish4-raspberrypi/
Advantage: It's cheap and you can learn and control a lot.
I am learning to program Java. My objective is to create client server application based on Java and MySQL.
That would have following.
Server Application where all admin controls would be available to configure.
server application will be the only to have access rights to MySQL.
Server will have all functions and objects that clients will require and call and get that functionality. (Reason for that is "I don't want to share MySQL credentials to client apps or rather i don't want MySQL credentials to be transmitted on the network to clients"). As it would increase maintenance tough and it could be a security loop hole.
An analogy of functionality could be: client calls to server telling to add an Order such addOrder(order_id, payment,..,...,..) and so on.
What are the method in practice for such kind of application these days? A example code/or material to get in right direction would suffice
These days the universal way to expose a service remotely is via a web service. This solution was preferred by the industry over time due to its simplicity and ease of integration to the point that binary based protocols like CORBA are now seldom used.
Take the example of Android applications, they are native application mostly using REST web services.
A REST web service can be easilly integrated in the same way with a desktop application, a mobile application or a web application, even if the clients are written in different native platforms and languages.
As sample code, have a look at tutorials on the Spring stack. For the server see this tutorial for building an hello word REST web service. For the client, consider the REST template.
For security, see this Spring security hello world example. Using the Spring stack in Java will likelly give you the largest number of tutorials and online support.
This sounds like a good place to use RMI, which Java has built in support for. RMI will allow your client to call server-side methods on a local object that corresponds to the server, where all messages/commands get transparently sent to the actual server, where you have your DB access stuff and logic.
I am beginner java web developer, now my question is after i developed my application, how to make users see it on the web?
I used JSF,MySQL and GlassFish server in my development stage and now i want to publish it.
I got a domain name and an a web hosting account on goDaddy.com
In other words what to do after i develope my web application?
what steps should i take in server creation and other stuff?
I have searched alot but there is no specific way for it. I am trying to make this dynamic website based on jsf development--and it is already done--become alive and out their like any other web site?
any guide lines and steps should i take in making this steps ?
Either you will need a "Production" server to host the application yourself or use a hosting service of some kind that provides a Java EE container. If you're tied to Glassfish, you can Google for those providers like http://glassfishhosting.com/.
Other options that might be good fits for you are cloud services. Something like either Rackspace or Amazon EC2. Each has their own pricing tiers that scale based on usage. Good luck to you going Live!
Can host the code on Github and push it to Heroku.
http://devcenter.heroku.com/categories/java
I don't know the provider you chose but you need a java application server for your live environment. And optimally this should be the same server as your development server.
For our projects we buy a virtual server and install Glassfish on it. This costs around 15 € per month and we have the same environment for development and production.
Why do we need Application Server in Java like JBoss or WebSphere. Is it possible that we develop large scale website only with Java (Apache Tomcat). Where thousand of user connect on site at a moment. An example is a website like b2b.
What is the cost of a Application Server? I will be thankful if you compare price among different application server and if there is any free version kindly highlight it.
Application Servers are mostly used if you want to use advanced features like transaction management, hot code swapping and advanced persistence.
There are application servers that are open source. E.g. GlassFish and JBoss.
I don't think you need an application server for building a popular web site, you'll also be fine with a servlet container like Tomcat or Jetty.
In short Application Servers provide you with few services like
Transaction Management
Load Balancing
Security
Threading
etc.
You have to take care of these things yourself in a Web Server.
There are few Open Source Application servers which are free of cost.
I have used Glassfish.
Apart from answers given above, App Servers are required for EJBs.
You need Application Server as follow:
It provides you useful services like automatic transaction,Authentication,Authorization,Lifecycle management.
To remember large user data across pages using ejb's pertaining to a client.
Load balance the user request and buisness logic.
To interact with different Client UI like Java Swing,Browsers.
It is possible to handle the httpheaders yourself. We have done socket servers in java for 20 years. You do not need a container for java swing.
Persistence can be done through databases or server side files unless you need real high speed stuff. I have yet to find a real requirement for an ejb
except that some systems simply require them
This may be because jboss can provide better after-sales service, and jboss, etc. can provide operation and maintenance support, etc. This may be the reason why many large companies choose commercial versions of servers.
But you must know that tomcat and netty are not bad. For example, many large B2B or C2C or B2C companies still use tomcat, such as Internet companies such as Alibaba.
Choose a server
Operation and maintenance costs
Scalable costs
Server cost
looking for someone to verify whether this approach is good or not . let say i have web app A run on tomcat. By deploying one webcache web app on the same tomcat. will that minimum the likelyhood that my web app crash due to overload by web visitors? if yes, what webcache should i used to implement this technique? or should i forget about webcache deploy this way and user service like akamai instead..? low cost is my main priority. looking forward to hear from you all
By duplicating on the same server/machine you gain nothing. When many users rush to the website, you would need more system resources to serve them and since these are shared by all web apps the second installation will be in as bad situation as the first one.
To properly cluster a web application you need more servers. You install Tomcat and your web application in each one and then use a load balancer to share the traffic. This is usually implemented with Apache Web Server and mod_proxy or mod_jk. Of course you need to pay for the extra server. One solution would be to deploy your app in a cloud environment (like Amazon EC2) and start the second server only when needed.
Another solution is to scale up, that is use a more powerful machine.