What is PHP load balancer?
Load balancing is where requests are distributed uniformly across servers in a server pool. Load balancers receive user requests and determine which server in a server pool to forward the request for final processing.
What is load balancing in MySQL?
The MySQL Load Balancer automatically and evenly distributes connections from clients to each server. Distribution is handled by a simple count for the number connections distributed to each server – new connections are automatically sent to the server with the lowest count.
What is HAProxy in MySQL?
HAProxy is an open source software which can load balance HTTP and TCP servers. In the previous article on HAProxy we configured load balancing for HTTP and in this one we’ll do the same for MySQL.
What if HAProxy goes down?
If the primary load balancer goes down, the floating IP will be moved to the second load balancer automatically, allowing service to resume.
Does MySQL support active/active cluster?
MySQL Cluster is implemented as a strongly consistent, active/active, multi-master database ensuring updates can be made to any node and are instantly available to the rest of the cluster, without any replication lag.
Can HAProxy be clustered?
In an active-active cluster, two or more instances of HAProxy Enterprise receives traffic in a load-balanced rotation. This allows you to scale out your load-balancing capacity.
What is database clustering in MySQL?
MySQL Cluster is the distributed database combining linear scalability and high availability. It provides in-memory real-time access with transactional consistency across partitioned and distributed datasets. It is designed for mission critical applications.
What is the difference between HAProxy and load balancer?
Difference between ELB and HAProxy ELB can handle only less number of concurrent connections when compared with HAProxy. HAProxy does not support SSL out of the box. ELB has SSL support, SSL offload or SSL termination. Algorithm options are available for HAProxy whereas ELB supports only Roundrobin.