load-balancing

问题 I have an big array of length N, let's say something like: 2 4 6 7 6 3 3 3 4 3 4 4 4 3 3 1 I need to split this array into P subarrays (in this example, P=4 would be reasonable), such that the sum of the elements in each subarray is as close as possible to sigma, being: sigma=(sum of all elements in original array)/P In this example, sigma=15 . For the sake of clarity, one possible result would be: 2 4 6 7 6 3 3 3 4 3 4 4 4 3 3 1 (sums: 12,19,14,15) I have written a very naive algorithm based

问题 Right now, the load balancers handle https and then pass along that https to my web servers. So dealing with https double for each request. What I want to do is completely offload https so my web servers don't have to deal with it. How do I configure Spring Security and JSP pages given that the web servers think all requests are http? Obviously I'll have to modify the <intercept-url> elements of my configuration to have their requires-channel attribute always be http or any . In my JSP pages

问题 I have following acl rules to check the range of my url_param value. acl small urlp_val(uid) le 311111111111000000 acl medium urlp_val(uid) 311111111111000001:311111111111001000 acl large urlp_val(uid) ge 311111111111001001 The number are 64 bit integers. This comparison doesn't seem to be working. It always redirect to only one instance. If I decrease the numbers to a range of say 1 to 100, it works well. Does it not support 64 bit numbers or am I doing something stupid/silly here? 回答1: The

问题 My question is a follow up of this topic : Cassandra load balancing with TokenAwarePolicy and shuffleReplicas I'm encountering some issues regarding the TokenAwarePolicy that I don't understand. Cluster configuration : 3 nodes Replication factor = 3 Load balancing policy : new TokenAwarePolicy(new RoundRobinPolicy(), false) Consitancy level (Reads/Writes) : ONE Shuffling replicas is set to false on purpose. But the thing is that I'm encountering consistency problems when reading datas in my

问题 I'm trying to create an replicated sharded cluster in mongodb. Initially I've created two shards and there are a replica set with three members in each shard. And all the shards and replicasets run in a single machine. I followed http://docs.mongodb.org/manual/tutorial/convert-replica-set-to-replicated-shard-cluster/ to deploy this structure and that worked perfectly. But as I'm running my mongodb in an AWS instance for a business application and I'm connecting my node.js server with the

问题 I have setup wildfly16 cluster,this includes 3 nodes node1-wildfly load balancer node2,node3- deployed application war Now what if load balancer failed? This setup works fine even if one node fails, the load balancer will manage the session. But the problem is what if load balancer fails?? it will become single point failure . I have followed below link https://docs.jboss.org/author/display/WFLY/Using+Wildfly+as+a+Load+Balancer Also is there any other way to do clustering without load

问题 i am running a minimal stateful database service on GKE. single node cluster. i've setup a database as a stateful set on a single pod as of now. the database has exposed a management console on a particular port along with the mandatory database port. i am attempting to do two things. expose management port over a global HTTP(S) load balancer expose database port outside of GKE to be consumed by the likes of Cloud Functions or App Engine Applications. My stateful set is running fine and i can

问题 I have been able to deploy this load balancer as a HTTP load balancer, and am now trying to deploy this as a HTTPS load balancer. I am attempting this with .JUNJA and .YAML on Google Cloud. I keep getting the error: Invalid value for field 'resource.sslCertificates[0]': 'www.example.com'. The\\ URL is malformed. resources: - name: web-lb-hc #Create a health check for the backend type: compute.v1.httpsHealthCheck properties: port: 443 requestPath: / - name: web-url-map #Required to map url to

问题 I'm working to set up an autoscaled WordPress site with Nginx on Compute engine, Here's my workaround: I have set up an Instance on which Installed Nginx and set up my WordPress site. Created a cloud SQL instance for the database of WordPress site. Create Custom Compute Engine Image from my Instance Disk on which I have set up my WP site. Then Create an Instance Template using the custom Image I have created. Then create my required 4 managed, autoscaled instance groups based on the my

问题 I have 2 web servers (IIS 8.5) behind a hardware firewall and our application uses SignalR for some real-time updates. We are using SQL Server as the backplane to help us work in this load balanced environment. Additionally we are using sticky sessions on the load balancer to help us keep the users on the same web server during their session. When we are running in this hardware configuration we lose at least 1/3 of our messages. Sometimes we get all the expected messages but more often than