Load Balancing MySQL with HAProxy - Slides - Download as a PDF or view online for free
Each multi-host connection is a wrapper of the underlying physical connections. ; Each of the underlying physical connections has its own session. Sessions cannot be tracked, shared, or copied, given the MySQL architecture. ; Every switch between physical connections means a switch between sessions.
At transaction boundaries (transactions are explicitly committed or rolled back). A communication exception (SQL State starting with "08") is encountered. When a SQLException matches conditions defined by user, using the extension points defined by the loadBalanceSQLStateFailover, loadBalanceSQLExceptionSubclassFailover or loadBalanceExceptionChecker properties.
Current active host count. Current active physical connection count. Current active logical connection count. Total logical connections created. Total transaction count.
Content of the white paper ; What is HAProxy? · Health checks for MySQL · Failure detection and failover · Read / write splitting with HAProxy · Integration with ClusterControl · HAProxy redundancy with Keepalived · HAProxy statistics · Troubleshooting and workarounds
JDBC 설정 방법jdbc:(mysql|mariadb):[replication:|sequential:|loadbalance:|aurora:]//[,...]/[database][?=[&=]...]replication: jdbc:mysql:replication://master1,slave1,slave2/testsequential: jdbc:mariadb:...
There are the possible protocols for a connection: ; jdbc:mysql: is for ordinary and basic JDBC failover connections. ; jdbc:mysql:loadbalance: is for load-balancing JDBC connections. See Section 3.8.3, “Configuring Load Balancing with Connector/J” for details. ; jdbc:mysql:replication: is for JDBC replication connections. See Section 3.8.4, “Configuring Source/Replica Replication with Connector/J” for details.
tcp load balancing임으로 steam를 사용하여 조정 (client ip로 hash로 지정)( http load balancing 은 upstream으로 ) stream { upstream MyGroup { # use IP address-based distribution hash $remote_addr; server 10.0.0.201 w...
이 페이지는 귀하의 언어로 번역되지 않았습니다. 번역 요청 ; Because the reader endpoint contains all Aurora Replicas, it can provide DNS-based, random reader assignment for new connections. Every time you resolve the reader endpoint, you'll get an instance IP that you can connect to, chosen randomly. DNS works at the connection level (not the individual query level). You must keep resolving the endpoint without caching DNS to get a different instance IP on each resolution....
Ncloud Classic 환경에서 Cloud DB for MySQL 서버의 읽기 부하를 로드밸런서로 분산시키는 방법입니다 MySQL DB서버의 부하를 줄이기 위해 보통 읽기 전용 DB서버를 생성하게 되는데, 읽기 전용 서버를 여러대 생성해서 로드밸런서(Load Balancer)로 연결하면 읽기 부하를 분산 시키고 좀 더 안정적인 서비스가 가능해집니다. 여기서는 Ncloud (네이버 클라우드) Classic 환경에서 관리형 DB인 Cloud DB ...