This is now possible with the addition of the ngx_stream_ssl_preread module added in Nginx 1.11.5 and the ngx_stream_map module added in 1.11.2. This allows Nginx to read the TLS Client Hello and decide based on the SNI extension which backend to use. stream { map $ssl_preread_server_name $name { vpn1.app.com vpn1_backend; vpn2.app.com vpn2_backend; https.app.com https_backend; default … Read more
Put a L3 load-balancer that distributes IP packets based on source-IP-port hash to your WebSocket server farm. Since the L3 balancer maintains no state (using hashed source-IP-port) it will scale to wire speed on low-end hardware (say 10GbE). Since the distribution is deterministic (using hashed source-IP-port), it will work with TCP (and hence WebSocket). Also … Read more
I’ve seen those terms used interchangeably, but there are different ways of implementing it: Send a cookie on the first response and then look for it on subsequent ones. The cookie says which real server to send to. Bad if you have to support cookie-less browsers Partition based on the requester’s IP address. Bad if … Read more
Database clustering is a bit of an ambiguous term, some vendors consider a cluster having two or more servers share the same storage, some others call a cluster a set of replicated servers. Replication defines the method by which a set of servers remain synchronized without having to share the storage being able to be … Read more
It looks like you are using a custom Kubernetes Cluster (using minikube, kubeadm or the like). In this case, there is no LoadBalancer integrated (unlike AWS or Google Cloud). With this default setup, you can only use NodePort or an Ingress Controller. With the Ingress Controller you can setup a domain name which maps to … Read more
Load Balancer: A kubernetes LoadBalancer service is a service that points to external load balancers that are NOT in your kubernetes cluster, but exist elsewhere. They can work with your pods, assuming that your pods are externally routable. Google and AWS provide this capability natively. In terms of Amazon, this maps directly with ELB and … Read more