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0answers
29 views

Could you please explain clustering in SQL server? [closed]

I'm new to clustering concepts. I would like to know more parallel processing with multiple DB nodes to have load balancing for the incoming requests. Our main goal is to achieve performance and lot ...
1
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0answers
105 views

Configure HAProxy to load balance Postgresql

I'm trying to load balance between servers running Postgresql (Master-Slave configuration with Streaming Replication). First I've tried setting up PgPool-II, and it worked fine when I connected some ...
0
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2answers
219 views

pgpool load balancing is sending all queries only to master

My two postgresql servers are configured for streaming replication, which is working fine. Pgpool is configured for Master Slave mode / Load Balance Mode. pgpool.conf: listen_addresses = '*' port = ...
1
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0answers
49 views

Load Balancing multiple databases in a multi-tenant setup

We have a multi-tenant setup where each client of ours runs a DB that is identical to every other client. We were using Mysql sofar and with CentOS 7.x ,switched to MariaDB. If we want to distribute ...
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1answer
58 views

Is it ok to use 4 application server against one database server?

Initially I have two database server (Master Master Replication config with Haproxy load balancing) A and B. And two application server say P and Q. Both P and Q is pointed towards A will move to B ...
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0answers
177 views

OrientDB distributed architecture

Technically this question could relate to any database that performs in a similar distribute manner but given that I am specifically working with OrientDB I thought the question should be target as ...
1
vote
1answer
416 views

Peer-to-Peer Transactional Replication Load Balancing in MS SQL Server

I'm looking at Peer-to-Peer Transactional Replication and it looks like a perfect fit for my requirements, but there's one unclear part - load balancing (see picture below). How it is implemented in ...
0
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0answers
221 views

Is Automatic failover is possible in pgpool?

I have setup the 2 PostgreSQL 9.4 severs with master-slave(Hot standby streaming replication).Is this possible in pgpool-II 3.4 to configure,where it works for automatic failover(network or hardware ...
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2answers
1k views

Load Balancer for MySQL MASTER MASTER Replication

We are having typical requirement. We are having MySQL MASTER-MASTER Replication setup in place. We require to setup Load Balancer between these 2 MySQL servers. I am aware of setting up WEB based ...
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0answers
254 views

Using Netscaler datastream and MySQL

I configured MySQL service on a netscaler 10.5. When I perform some MySQL benchmarks using mysqlslap, the first time it runs correctly, the 2nd time I have an error message: When I run it the first ...
0
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0answers
20 views

Mongodb sharding balancing not working properly, says config servers differ [duplicate]

Iam using a mongodb sharding configuration in which there are 3 config servers, 2 query routers and 2 shards. One of my shard is having 32 gb data and other is having only 6 gb data. Balancing is not ...
0
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1answer
91 views

How to setup large database access/cache on LAMP environment? [closed]

My application is getting very slow I guess because of the ever growing database (30+ tables some with 50,000+ rows). Using CodeIgniter's model tier to call MySQL database, I optimized queries & ...
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0answers
900 views

How to split task (read and write) between two mysql server via HAproxy load balancing?

I have done some test and setup two (A and B) different database server from the following link - https://www.digitalocean.com/community/tutorials/how-to-use-haproxy-to-set-up-mysql-load-balancing--3 ...
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1answer
882 views

MySQL stress test tool, remote server preferred

For MySQL stress test there exists programs: http://dev.mysql.com/doc/mysqltest/2.0/en/test-programs.html Also mysqlslap exists: http://dev.mysql.com/doc/refman/5.5/en/mysqlslap.html Is it possible ...
1
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0answers
503 views

Error to connect mongos when trying to create replicated sharded cluster

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 ...
1
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1answer
692 views

Mongodb: slow shard balancing

I've decided to shard a collection with 500M+ documents into 24 shards. All shards are on the same machine without replicas as was advised in this title (core sharding). The shard key is {"_id":1}. I ...
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0answers
2k views

Solved Mysql connection lost with HAProxy

I have master-master replication with mysql. and haproxy configured front of my master-master replication. When I connect my replication via HaProxy, mysql says that "MYSQL has gone away". But when I ...
2
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1answer
1k views

Are TCP loadbalancers an alternative to Postgres 9.X read slaves load balancers like pgPool II or pgBouncer?

To scale read traffic on PostgreSQL streaming replication slaves, I want to be able to load-balance the requests. Postgres documentation suggests using tools like pgPool and pgBouncer, but I am ...
4
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1answer
2k views

Confused about load balancing and horizontal scaling in postgresql [closed]

Please correct me if I am wrong but I guess handling more requests and load by adding more machines or balancing the load between multiple servers is horizontal scalling. So, if I add more servers, ...
0
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1answer
534 views

pgpool2 not working on my Ubuntu i686 athlon i386 GNU/Linux

I am trying to implement replication and load balancing on my Ubuntu i686 athlon i386 GNU/Linux.for creating database clustures I have installed postgresql contrib 9.1.11 having initially database ...
0
votes
1answer
52 views

MongoDB Balancer:move data inside replication set or across replication set?

After reading the document of mongodb on the balancer topic , I have two questions: 1.If I set Balancer on , will the db operation efficiency will be influenced ? 2.Still ,I cannot understand ...
6
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1answer
7k views

PostgreSQL High Availability/Scalability using HAProxy and PGBouncer

I have multiple PostgreSQL servers for a web application. Typically one master and multiple slaves in hot standby mode (asynchronous streaming replication). I use PGBouncer for connection pooling: ...
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1answer
1k views

How can I configure SQL Server 2012 to use multiple NICs?

How can I configure SQL Server 2012 to use multiple NICs? I've a server with 4 NICs. I want to use 2 NICs to query my databases, and 2 NICs to retrieve results from them. I want them to work in load ...
2
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1answer
539 views

LoadBalancing JDBC DataSource Connect without URL

When using JDBC I like the new DataSource-way to establish the connection. Further I like the isolated set-Methods for the properties like setUser, setPassword, setDriverType, setServerName, ...