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Successful 6 Instances of WAS

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    #16
    Re: Successful 6 Instances of WAS

    You are correct, you don't have to have the above but if I am going to explain what I have done, you need the above. Sure there are other and possibly better ways to do multiple WAS instances.

    Thanks
    Chad Brown

    Comment


      #17
      Re: Successful 6 Instances of WAS

      Originally posted by mmaisterrena View Post
      Although this is a possible (and good) solution, none of the above are required since you can run multiple WASeses :o on a single IP but with different ports and always up is certainly not required either although is a very helpful piece of software
      Hi in your solution does the port show up in the url and if so did you get around it?
      Because it seems that most people are not liking if the port shows in the url.

      Thanks
      Chad Brown

      Comment


        #18
        Re: Successful 6 Instances of WAS

        I would vote that Chad's original list is accurate and that running all instances to the same port number, therefore ip binding, is mandatory. Otherwise, the port# will appear for non-port 80 instances and that means the URL is different for each instance. I'm not exactly sure how a load balancer works but I assume it expects the same URL for each instance.

        AU or some other utility to run A5WAS as a service is, from a practicaly standpoint, also mandatory unless you expect to sit there and watch your server and login/restart A5WAS after a crash.

        1 you need a machine that can handle multiple ip address's
        2 bind your was to a specific ip address
        3 get Always up and get one instance running as a service.
        Steve Wood
        See my profile on IADN

        Comment


          #19
          Re: Successful 6 Instances of WAS

          I think we shouldnt missleed other people to think 3rd party software is requiered for this although i do agree that it is very convenient to use Alpha as a service

          i worked with Michel Scholin for setting up a second WAS, in his case he wanted the second instance to work only for creating reports and since he was using a tabbed UI the URL with port 81 wouldnt show up.
          Cheers
          Mauricio

          Comment


            #20
            Re: Successful 6 Instances of WAS

            To avoid further disscusion on this here is this chart for using multiple WAS instances:

            Minimum requirements:

            1. 1 WAS Licence
            2. Available ports (1 port for each instance you want to run)


            Recommended Setup (as Chad stated):

            1. you need a machine that can handle multiple ip address's
            2. bind your was to a specific ip address
            3. get Always up and get one instance running as a service.
            Cheers
            Mauricio

            Comment


              #21
              Re: Successful 6 Instances of WAS

              The question of what is the right setup is really about what is right for you.

              If my home business webiste goes down, I just log in and start it back up, so I use Mauricio's list.

              In Chad's case, he is a one-man IT department running a chain of cell phone stores that are open 9am to 9pm, 7 days a week with about 70 people working on it constantly. He also likes to go on vacation and play golf once in a while. If his system goes down, or works too slow, then he loses business. For him, server response times and automatically restarting if the server goes down is a vital requirement.

              Chad was offering to help people learn how his system was set up and how Alpha can be extended for heavy use. Not sure how the discussion got off on what's right or wrong...

              Pat
              Pat Bremkamp
              MindKicks Consulting

              Comment


                #22
                Re: Successful 6 Instances of WAS

                Hi,

                I work in a school and have been putting together a Web Portal for parent to view various student data for their kids regarding attendance, assessment etc.

                I will be using a tabbed ui which will include about 7 grids with the backend being MySQL. I was going to use MSSQL but as Steve Wood's security for AalphatoGo is now based on MySQL I may as well use that as I can export the data from the MSSQL MIS through SSIS packages into MySQL. I will be using a 1 + 1Dedicated server and all the data will be denormalised so I do not expect to have any joins as it is all view only.

                Potentially I could have 1000 concurrent connections which at the moment is a little worrying as to whether the WAS can cope with. I do find the blurb put out by alpha a little woolly about concurrent connections but I have picked up quite a bit from this thread.

                Presumably if I have a quad core server and I load 4 WAS's they will automatically use a core each? Do you have any details on how to do this.

                What are folks using for Load Balancing?

                Thanks for listening to my waffle.

                Chris

                Comment


                  #23
                  Re: Successful 6 Instances of WAS

                  I am not sure about anyone else but Zebra host does have a load balancing at I believe 75/mth.

                  My site which I load balance with no software at all. This is due to the fact that my locations all sign into different websites that I have specified to them.

                  Unfortunately I realize for most this is impossible to do.

                  If you use always up you can specify each instance to run on a specific cpu.
                  Chad Brown

                  Comment


                    #24
                    Re: Successful 6 Instances of WAS

                    Hi Chad,

                    Thanks for the reply.

                    Are you saying that you have 1 dedicated server that has 6 cores and you assign one website to each core. How much processing load does your website have.

                    Am I correct in thinking that you must have 6 different ip addresses and website addresses that all link to the same datasource.

                    I have always up so will look more in depth at that.

                    Thanks

                    Chris

                    Comment


                      #25
                      Re: Successful 6 Instances of WAS

                      I have around 75 concurrent users which is low for what i have prepared for and yes i have 6 address's and 8 cores
                      Chad Brown

                      Comment


                        #26
                        Re: Successful 6 Instances of WAS

                        Thanks for the reply Chad.

                        I will have a look at doing it that way.

                        Have you load tested the setup and HOW MANY CONCURRENT USERS would you estimate that it could cope with.

                        Chris

                        Comment


                          #27
                          Re: Successful 6 Instances of WAS

                          I have not tested it however I would assume I have overkill for the current amount of users.

                          If Alpha would like to test my current set up they would be more than welcome to. I would prefer to do it after hours and they can test away. Just let me know if I have to do anything on my end and I will be happy to post the results for all to see.
                          Chad Brown

                          Comment


                            #28
                            Re: Successful 6 Instances of WAS

                            check out this article in INFOWORLD about an Alpha Five v10 app for a 600 store retail chain (with multiple users per store) running an intranet built in alpha five.

                            http://www.infoworld.com/t/applicati...rm-neoload-004

                            In this case our testing showed that with a load balancer balancing the load between 2 servers (each running multiple instances of the Alpha Five app server in a Hyper V environment,) the performance requirements of the client were met.

                            To scale to many more simultaneous users - you would use the same approach -- ie a load balancer switching the load between multiple servers.
                            __________________
                            Richard Rabins
                            Co Chairman
                            Alpha Software
                            Richard Rabins
                            Co Chairman
                            Alpha Software

                            Comment


                              #29
                              Re: Successful 6 Instances of WAS

                              Richard,

                              Before I start I have to say I love the Alpha tools, they allow me to do things that I would never had the time to do. If I hadn't found Alpha I would have had to buy in bought products and wouldn't have got the bespoke systems that would suit us far better.

                              After saying that it is like getting something with one and losing it with the other. I don't know if it is just me but it strikes me that the WAS out of the box, which by consensus will only support something in the region of 20 concurrent users, is not a big league Application Server. It seems as though it is sadly lacking and you have to spend an awful lot of cash and technical trickery to bring it up to the required standard for some of us.

                              But I may be missing something.

                              Chris

                              Comment


                                #30
                                Re: Successful 6 Instances of WAS

                                thank you for your very positive comments

                                i dont know where you are getting the number of 20 from ??? but that is not even close to the number

                                If you look at my previous post -

                                check out this article in INFOWORLD about an Alpha Five v10 app for a 600 store retail chain (with multiple users per store) running an intranet built in alpha five.
                                http://www.infoworld.com/t/applicati...rm-neoload-004

                                In this case our testing showed that with a load balancer balancing the load between 2 servers (each running multiple instances of the Alpha Five app server in a Hyper V environment,) the performance requirements of the client were met.

                                To scale to many more simultaneous users - you would use the same approach -- ie a load balancer switching the load between multiple servers.



                                you will see that Alpha Five v10 (which is quite a bit more robust than earlier versions) was - according to testing published in INFOWORLD - able to handle about 1000 concurrent sessions with 2 servers using a load balancer
                                Richard Rabins
                                Co Chairman
                                Alpha Software

                                Comment

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