load-balancing

问题 I am participating in the development of a distributed solution, based on RMI, and deployed on multiple Weblogic 10gR3 (10.3.0.0) nodes. One of the nodes hosts a RMI server, and other nodes access it through a foreign JNDI provider. While trying to improve our infrastructure by adding additional RMI servers, we faced some issues. Details of our infrastructure: -RMI server is running on a managed server, on port 7005. -RMI clients access it through a remote JNDI provider which points to

问题 I tried to test RabbitMQ, but I found that rabbitmq has some problems: if I created a cluster of 3 nodes, I can't publish/delivered more than 6000/s. in other hand, if I worked with one single node, I can publish/delivery until 25000/s. which means, more that I add nodes, more performance is deteriorating. but from this article : https://blog.pivotal.io/pivotal/products/rabbitmq-hits-one-million-messages-per-second-on-google-compute-engine they can publish more than 1 million, so how they can

问题 I'm working with a long running parfor loop in matlab. parfor iter=1:1000 chunk_of_work(iter); end There are generally about 2-3 timing outliers per run. That is to say for every 1000 chunks of work performed there are 2-3 that take about 100 times longer than the rest. As the loop nears completion, the workers that evaluated the outliers continue to run while the rest of the workers have no computational load. This is consistent with the parfor loop distributing work statically. This is in

问题 I've an nginx container used as load balancer, for a streaming DASH-based service.There are also 3 VM used as upstream servers. This is nginx config file: upstream cdn-audio { server 192.168.99.103:9500; server 192.168.99.104:9500; server 192.168.99.105:9500; } upstream cdn-video { server 192.168.99.103:9500; server 192.168.99.104:9500; server 192.168.99.105:9500; } server { listen 80; server_name 172.17.0.1; access_log /var/log/nginx/acces.log main; location = /LynyrdSkynyrdFreebirdAudio.mp4

问题 Is it possible/feasible/reasonable to use HAProxy to load-balance three SQL Server 2008 database servers? Here is our situation: we have two web servers that are load-balanced on Amazon EC2. We are currently using one production SQL Server 2008 DB server. That server is starting to get overloaded, so we would like to add two more DB servers, and implement a load-balancing solution. In Amazon EC2, we are unable to use a Virtual IP address, which prevents us from being able to use Windows

问题 I've recently been playing around with the new network load balancers in AWS. I eventually got it working, but it seems the target group health check ignores the interval setting. It's an HTTP check set at 30 seconds, but in my web server logs, I see about 3 checks per second. Weirdly, in the monitoring graph, it shows checks happening once per second!? It's not necessarily a problem, but it is rather inefficient. Has anyone else seen this? 回答1: I have observed the same thing and posted this

问题 I've recently been playing around with the new network load balancers in AWS. I eventually got it working, but it seems the target group health check ignores the interval setting. It's an HTTP check set at 30 seconds, but in my web server logs, I see about 3 checks per second. Weirdly, in the monitoring graph, it shows checks happening once per second!? It's not necessarily a problem, but it is rather inefficient. Has anyone else seen this? 回答1: I have observed the same thing and posted this

问题 After introducing ALB (Application Load Balancer on AWS) in front of one EC2 instance, Chrome browser shows Mixed Content Error. (I edited the content of the error a little by security reason) Mixed Content: The page at 'https://www.sample.com/talk' was loaded over HTTPS, but requested an insecure EventSource endpoint 'http://www.sample.com/api/getData?param1=123&param2=456'. This request has been blocked; the content must be served over HTTPS. Pattern1 has no errors. Pattern2 shows the above

问题 I am using the EC2 Load Balancer to handle HTTPS requests. For Chrome & Safari, having the Load Balancer Protocol set HTTPs at Port 443 with the the SSL cert handles most traffic correctly. HTTPS requests from Safari & Chrome are fine. However in Firefox, I get the connection is insecure "(Error code: sec_error_unknown_issuer)." In checking with a cert checker, I get The certificate is not signed by a trusted authority (checking against Mozilla's root store). If you bought the certificate

问题 I am using the EC2 Load Balancer to handle HTTPS requests. For Chrome & Safari, having the Load Balancer Protocol set HTTPs at Port 443 with the the SSL cert handles most traffic correctly. HTTPS requests from Safari & Chrome are fine. However in Firefox, I get the connection is insecure "(Error code: sec_error_unknown_issuer)." In checking with a cert checker, I get The certificate is not signed by a trusted authority (checking against Mozilla's root store). If you bought the certificate