I also like the MariaDB Max scale that Reindl Harald Sent -Thanks- However I don't know if it is possible to use 2 servers of the max scale with a load balancer in front of them or not. I always try to avoid the Single Point of Failure.
"https://mariadb.com/products/mariadb-maxscale/how-maxscale-works"; -- Eng. Mahmoud Alshinhab AWS Cloud Support Engineer Fedora Ambassador Wiki : https://fedoraproject.org/wiki/User:Tuxawy mahmoud.alshin...@gmail.com tux...@fedoraproject.org On Fri, Apr 29, 2016 at 5:20 PM, Mahmoud Alshinhab < mahmoud.alshin...@gmail.com> wrote: > I quote this from the page[1]: > Load balancing implementation Random picking > > When initializing a connection or after a failed connection, the connector > will attempt to connect to a host with a certain role (slave/master). The > connection is selected randomly among the valid hosts. Thereafter, all > statements will run on that database server until the connection will be > closed (or fails). > > The load-balancing will includes a pooling mechanism. Example: when > creating a pool of 60 connections, each one will use a random host. With 3 > master hosts, the pool will have about 20 connections to each host. > Master/slave distributed load > > For a cluster composed of masters and slaves on connection initialization, > there will be 2 underlying connections: one with a master host, another > with a slave host. Only one connection is used at a time. > For a cluster composed of master hosts only, each connection has only one > underlying connection. > The load will be distributed due to the random distribution of > connections.. > Master/slave connection selection It’s the application that has to decide > to use master or slave connection (the master connection is set by default). > Switching the type of connection is done by using JDBC > connection.setReadOnly(boolean > readOnly) > <http://docs.oracle.com/javase/7/docs/api/java/sql/Connection.html#setReadOnly%28boolean%29> > method. Setting read-only to true will use the slave connection, false, the > master connection. > > [1] > https://mariadb.com/kb/en/mariadb/failover-and-high-availability-with-mariadb-connector-j/ > > So I think it is not implemented yet. as "the application has to decide to > use master or slave connection (the master connection is set by default)." > > -- > Eng. Mahmoud Alshinhab > AWS Cloud Support Engineer > Fedora Ambassador > Wiki : https://fedoraproject.org/wiki/User:Tuxawy > mahmoud.alshin...@gmail.com > tux...@fedoraproject.org > > On Fri, Apr 29, 2016 at 5:14 PM, Mahmoud Alshinhab < > mahmoud.alshin...@gmail.com> wrote: > >> It was actually built for Amazon's Aurora, but it should work with any >> mysql-compatible protoco. >> >> -- >> Eng. Mahmoud Alshinhab >> AWS Cloud Support Engineer >> Fedora Ambassador >> Wiki : https://fedoraproject.org/wiki/User:Tuxawy >> mahmoud.alshin...@gmail.com >> tux...@fedoraproject.org >> >> On Fri, Apr 29, 2016 at 3:13 PM, Reindl Harald <h.rei...@thelounge.net> >> wrote: >> >>> >>> Am 29.04.2016 um 15:07 schrieb Johan De Meersman: >>> >>>> From: "Mahmoud Alshinhab" <mahmoud.alshin...@gmail.com> >>>>> Subject: Re: slave to master >>>>> >>>> >>>> I think you should have a look at MariaDB Connector[1]. >>>>> >>>> >>>> It provides Load balancing and failover as Failover occurs when a >>>>> connection to >>>>> a primary database server fails and the connector will open up a >>>>> connection to >>>>> another database server. >>>>> >>>> >>>> Hmm, I didn't know that they built that into it, interesting. Does it >>>> require server features, or would it work with any mysql-compatible >>>> protocol ? >>>> >>>> Load balancing allows load (read and write) to be distributed over >>>>> multiple >>>>> servers. >>>>> >>>> >>>> Is read-write splitting also built-in, then? >>>> >>> >>> here you go: https://mariadb.com/de/products/mariadb-maxscale and >>> forget about "MariaDB Connector" whatever that is >>> >>> >> >
