I have 1 process that receives incoming connection from port 1000 in 1 linux server. However, 1 process is not fast enough to handle all the incoming request. I want to run multiple processes in the server but with 1 end-point. In this way, the client will only see 1 end-point/process not multiple. I have checked LVS and other Load Bal...
This would be a question for anyone who has code in the App_Code folder and uses a hardware load balancer. Its true the hardware load balancer could be set to sticky sessions to solve the issue, but in a perfect world, I would like the feature turned off. When a file in the App_Code folder, and the site is not pre-compiled iis will gene...
I know that the MsNLB can be configured to user mulitcast with IGMP. However, if the switch does not support IGMP what are the options? ...
PHP stores its session information on the file system of the host of the server establishing that session. In a multiple-host PHP environment, where load is unintelligently distributed amongst each host, PHP session variables are not available to each request (unless by chance the request is assigned to the same host -- assume we have n...
I have a pair of Sun web servers (iws6) sitting behind a load balancer. It likes to know if the web servers are up and continually asks for /alive.html. That is fine but how do I not log that in my access log? Failing that, how could I have the archiver strip out that accesses when it roles the file over? I would prefer something more ...
I have to deploy my ASP.NET application into two seperated IIS servers. My application works over HTTPS/TLS. My ASP code has to handle client SSL certificate and it means I can't use simple forward load balancers, because I will never get such certificate from nginx or Apache Load Balancer. As I understand there is no common (open-sourc...
Hello, I'm working on some code for a loosely coupled cluster. To achieve optimal performance during jobs, I have the cluster remap its data each time a child enters or exits. This will eventually be made optional, but for now it performs its data balancing by default. My balancing is basically just making sure that each child never has...
Some projects have properties have miscellaneous settings such as: "AllowPayments", "ShowSideBar", "SectionTitle". Really things that don't necessarily fit in to other objects. How do you guys store these kinds of values? ApplicationSettings? Flat File? Database table? How do you access them? Static object with properties? DB call? W...
Is there a way to deactivate the optimization for collocated objects that Weblogic uses by default for a specific EJB ? EDIT: Some context : We have a scheduler service that runs inside one node of the cluster. This is for historic reasons and cannot be changed at the moment. This service makes call to an EJB and we would like to load...
There are a lot of different systems for balancing load and achieving redundancy in production servers (Not just web servers) Round-robin DNS Linux Virtual Server Cisco Local Director F5 BigIP Windows NLB etc? If you use one of these (or another) in production, which one? How well does it work for you? Have you evaluated others? ...
Hi, From what I understand, if you have multiple web servers, then you need some kind of load balancer that will split the traffic amongst your web servers. Does this mean that the load balancer is the main connecting point on the network? ie. the load balancer has the IP address of the domain name? If this is the case, it makes it re...
Hi, I remember hearing Joel say he has 2 different locations where the servers are located, each location has 2 front end servers and 1 back end server. If a one of the hosting facilities goes down, how can he switch over to the other one? (Or is it just going to be a DNS change that will take 24-72 hours to propagate?). How can a si...
We've been fighting with HAProxy for a few days now in Amazon EC2; the experience has so far been great, but we're stuck on squeezing more performance out of the software load balancer. We're not exactly Linux networking whizzes (we're a .NET shop, normally), but we've so far held our own, attempting to set proper ulimits, inspecting ker...
Hi, We're creating a web system using Java and Servlet technology (actually Wicket for the presentation layer) and we need our system to be available nearly always as our customers will be quite dependent on it. This has lead us to look for a good book focusing on the subject or another resource which explains how to set up a more redu...
Windows NLB works great and removes computer from the cluster when the computer is dead. But what happens if the application dies but the server still works fine? How have you solved this issue? Thanks ...
Is it possible to load balance a Lucene.NET index across multiple processes / servers? Since Lucene.NET is filebased is it possible to just make a simple filecopy (using i.e. robocopy) of the index to the servers serving queries? ...
I'm working on a project were we have number (5 at the moment) of servers spread across the world. Clients connect to one of those servers through a centralized broker. We know the originating country of the client but nothing else. We have full control of the servers so we can have all the info we need on those. We don't control the cli...
I have built a simple WCF Service and deployed it to IIS6, and I'm noticing that it works in my Dev and Staging environments, but not Production. Every time I try to hit the service metadata link, I get a 404 page. I've checked IIS config everywhere I can think of and they're identical, so the only difference I can think of is that the...
I operate an OLTP system that allows SSL connections over the internet at multiple sites. I would like to find an effective solution to how to transparently and automatically reroute transaction connections when one site is down. Bonus points for considering the site down when it is not actually unreachable or unable to connect but jus...
We are currently using database to maintain state information (in a separate table) for the user. We fetch that information from the database every time user access the application (sends request) and update it in the database back after processing the request. This has worked very well for us in many of our projects and is very easy to...