Scale your database traffic with Read & Write split using MySQL Router
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The document discusses the utilization of MySQL Router for read/write splitting to enhance database traffic management. It outlines various configurations and use cases for static and dynamic read/write routing in environments such as InnoDB clusters and replica sets. Additionally, it evaluates the advantages and limitations of different routing strategies and provides a comparison of load balancer features.
![Router Config File:-
[routing:read_only]
bind_address = localhost
bind_port = 6000
destinations = 172.31.0.196:3306, 172.31.0.200:3306, 172.31.0.205:3306
routing_strategy=round-robin
[routing:read_write]
bind_address = localhost
bind_port = 7000
destinations = 172.31.7.51:3306, 172.31.7.55:3306
routing_strategy = next-available
Case 1: Static Read and Write Routing](https://image.slidesharecdn.com/mysqlrouter1-240413090614-22bf5c6d/85/Scale-your-database-traffic-with-Read-Write-split-using-MySQL-Router-17-320.jpg)
![Router Config File:-
[routing:bootstrap_rw]
bind_address=0.0.0.0
bind_port=6446
destinations=metadata-cache://innodb_cluster/?role=PRIMARY
routing_strategy=first-available
protocol=classic
[routing:bootstrap_ro]
bind_address=0.0.0.0
bind_port=6447
destinations=metadata-cache://innodb_cluster/?role=SECONDARY
routing_strategy=round-robin-with-fallback
protocol=classic
Case 2: Router R/W Split for InnoDB Cluster - Configuration](https://image.slidesharecdn.com/mysqlrouter1-240413090614-22bf5c6d/85/Scale-your-database-traffic-with-Read-Write-split-using-MySQL-Router-23-320.jpg)
![Router Config File:-
[routing:bootstrap_rw_split]
bind_address=0.0.0.0
bind_port=6450
destinations=metadata-cache://innodb_cluster/?role=PRIMARY_AND_SECONDARY
routing_strategy=round-robin
protocol=classic
connection_sharing=1
client_ssl_mode=PREFERRED
server_ssl_mode=PREFERRED
access_mode=auto
Case 2: Router R/W Split for InnoDB Cluster - Configuration](https://image.slidesharecdn.com/mysqlrouter1-240413090614-22bf5c6d/85/Scale-your-database-traffic-with-Read-Write-split-using-MySQL-Router-24-320.jpg)
![Router Config File:-
mysqlrouter -B mydbops@ip-172-31-7-51 -d /home/mydbops/router_replicaset -u root
[[routing:bootstrap_rw]
bind_address=0.0.0.0
bind_port=6446
destinations=metadata-cache://innodb_replica_set/?role=PRIMARY
routing_strategy=first-available
protocol=classic
[routing:bootstrap_ro]
bind_address=0.0.0.0
bind_port=6447
destinations=metadata-cache://innodb_replica_set/?role=SECONDARY
routing_strategy=round-robin-with-fallback
protocol=classic
Case 3: Router R/W Split for InnoDB Replica Set](https://image.slidesharecdn.com/mysqlrouter1-240413090614-22bf5c6d/85/Scale-your-database-traffic-with-Read-Write-split-using-MySQL-Router-31-320.jpg)
![Router Config File:-
[routing:bootstrap_rw_split]
bind_address=0.0.0.0
bind_port=6450
destinations=metadata-cache://innodb_replica_set/?role=PRIMARY_AND_SECONDARY
routing_strategy=round-robin
protocol=classic
connection_sharing=1
client_ssl_mode=PREFERRED
server_ssl_mode=PREFERRED
access_mode=auto
Case 3: Router R/W Split for InnoDB Replica Set](https://image.slidesharecdn.com/mysqlrouter1-240413090614-22bf5c6d/85/Scale-your-database-traffic-with-Read-Write-split-using-MySQL-Router-32-320.jpg)
Scale your database traffic with Read & Write split using MySQL Router
- 1. Scale Your Database Traffic with Read/Write Splitting using MySQL Router Presented by Vignesh Prabhu S Database Reliability Engineer II Mydbops Mydbops MyWebinar - 31 Apr 13th, 2024
- 2. Consulting Services Consulting Services Managed Services ● Database Management and consultancy provider ● Founded in 2016 ● Assisted 800+ happy customers ● AWS partners ● PCI & ISO certified About Us
- 3. ● Introduction to MySQL Router ● Why MySQL Router? & It’s Features ● MySQL Router: Destination & Routing Strategy ● Use Cases of MySQL Router ● Case 1: Static RW Routing for Standalone Servers ● Case 2: Dynamic RW Split for InnoDB Cluster ● Case 3: Dynamic RW Split for Innodb Replica Set ● Load Balancer Comparison Agenda
- 5. ● Part of InnoDB Cluster ● Transparent routing between application and back-end MySQL Servers ● High Availability Solution ● Easily Scalable Introduction to MySQL Router
- 6. ● Auto Failover ● Highly Available ● Zero Config Changes during addition / deletion of nodes Why MySQL Router?
- 7. ● Transparent Routing - Default ● High Availability - InnoDB Cluster ● Load Balancing ● Routing Strategy - 8.0.4 ● Read/Write Splitting - 8.3 ● Automatic Failover ● Bootstrap Configuration - Cluster and Replica Set ● Cross-Version Compatibility Features
- 8. Destination:- destinations = 172.31.0.196:3306, 172.31.0.200:3306, 172.31.0.205:3306 Routing Strategy:- ● first-available ● next-available ● round-robin ● round-robin-with-fallback MySQL Router: Destination & Routing Strategy
- 13. Use Cases of MySQL Router
- 14. Case 1: Static Read and Write Routing for Master Repl Servers
- 15. Environment:- Case 1: Static Read and Write Routing Nodes IP Master 1 172.31.7.51 Master 2 172.31.7.55 Replica 1 172.31.0.196 Replica 2 172.31.0.200 Replica 3 172.31.0.205
- 16. Case 1: Static Read and Write Routing
- 17. Router Config File:- [routing:read_only] bind_address = localhost bind_port = 6000 destinations = 172.31.0.196:3306, 172.31.0.200:3306, 172.31.0.205:3306 routing_strategy=round-robin [routing:read_write] bind_address = localhost bind_port = 7000 destinations = 172.31.7.51:3306, 172.31.7.55:3306 routing_strategy = next-available Case 1: Static Read and Write Routing
- 18. Case 1: Static Read and Write Routing Advantages:- ● Routing can be done based on the Routing_strategy ● Read and Write Split is available for the static destinations Limitations:- ● Configuration is Manual ● Automatic Failover is not available ● Dynamic Destinations can’t be added. It requires the restart of the router. ● Separate Ports needs to be used for Read and Write.
- 19. Case 2: Dynamic Read and Write Split for InnoDB Cluster
- 20. Case 2: Router R/W Split for InnoDB Cluster
- 21. Cluster Node IPs - Steps to Configure - ● mkdir -p /home/mydbops/mysql_router ● mysqlrouter -B cluster@ip-172-31-14-181 -d /home/mydbops/mysql_router -u root Case 2: Router R/W Split for InnoDB Cluster - Configuration Cluster Nodes IP Hostname Node 1 172.31.14.181 ip-172-31-14-181 Node 2 172.31.15.227 ip-172-31-15-227 Node 3 172.31.10.174 ip-172-31-10-174
- 22. Directories & Files Created:- Case 2: Router R/W Split for InnoDB Cluster - Configuration File / Directory Purpose start.sh To start the MySQL Router for the Innodb Cluster stop.sh To stop the MySQL Router for the Innodb Cluster mysqlrouter.conf MySQL Router Configuration file for Innodb Cluster data/state.json Contains Innodb Cluster Primary Information log/ Log Directory that holds the MySQL router log
- 23. Router Config File:- [routing:bootstrap_rw] bind_address=0.0.0.0 bind_port=6446 destinations=metadata-cache://innodb_cluster/?role=PRIMARY routing_strategy=first-available protocol=classic [routing:bootstrap_ro] bind_address=0.0.0.0 bind_port=6447 destinations=metadata-cache://innodb_cluster/?role=SECONDARY routing_strategy=round-robin-with-fallback protocol=classic Case 2: Router R/W Split for InnoDB Cluster - Configuration
- 24. Router Config File:- [routing:bootstrap_rw_split] bind_address=0.0.0.0 bind_port=6450 destinations=metadata-cache://innodb_cluster/?role=PRIMARY_AND_SECONDARY routing_strategy=round-robin protocol=classic connection_sharing=1 client_ssl_mode=PREFERRED server_ssl_mode=PREFERRED access_mode=auto Case 2: Router R/W Split for InnoDB Cluster - Configuration
- 25. Conditions for RW Split:- ● Connection Sharing must be enabled ● Destinations Should be targeted to metadata-cache ● access mode should be in AUTO ● Protocol should be in CLASSIC ● Server & Client ssl modes should be in PREFERRED Case 2: Router R/W Split for InnoDB Cluster - Configuration
- 26. Advantages:- ● Bootstrapping is available. ● Automatic Failover for HA system ● Destinations will be changed with respect to the Cluster Node Availability ● Native Support for R/W Split Case 2: Router R/W Split for InnoDB Cluster
- 27. Case 3: Dynamic Read and Write Split for InnoDB Replica Set
- 28. Case 3: Router R/W Split for InnoDB Replica Set
- 29. Replica Set Node IPs - Case 3: Router R/W Split for InnoDB Replica Set Cluster Nodes IP Hostname Source 172.31.0.196 ip-172-31-0-196 Replica 172.31.7.51 ip-172-31-7-51
- 30. Case 3: Router R/W Split for InnoDB Replica Set
- 31. Router Config File:- mysqlrouter -B mydbops@ip-172-31-7-51 -d /home/mydbops/router_replicaset -u root [[routing:bootstrap_rw] bind_address=0.0.0.0 bind_port=6446 destinations=metadata-cache://innodb_replica_set/?role=PRIMARY routing_strategy=first-available protocol=classic [routing:bootstrap_ro] bind_address=0.0.0.0 bind_port=6447 destinations=metadata-cache://innodb_replica_set/?role=SECONDARY routing_strategy=round-robin-with-fallback protocol=classic Case 3: Router R/W Split for InnoDB Replica Set
- 32. Router Config File:- [routing:bootstrap_rw_split] bind_address=0.0.0.0 bind_port=6450 destinations=metadata-cache://innodb_replica_set/?role=PRIMARY_AND_SECONDARY routing_strategy=round-robin protocol=classic connection_sharing=1 client_ssl_mode=PREFERRED server_ssl_mode=PREFERRED access_mode=auto Case 3: Router R/W Split for InnoDB Replica Set
- 33. Advantages:- ● Bootstrapping is available. ● Destinations will be changed with respect to the Cluster Node Availability ● Native Support for R/W Split Limitation:- ● Manual Failover is required via MySQL admin api Case 3: Router R/W Split for InnoDB Replica Set
- 34. Demo: Router with Innodb Cluster
- 36. Load Balancer Comparison Features MySQL Router ProxySQL Maxscale Easy Setup with bootstrap function YES Yes NO Auto Addition of Cluster Nodes YES Yes NO InnoDB Replica Set support YES NO NO Auto Addition of Replica Set Nodes YES NO NO Load Balancing based on Connection YES YES YES Load Balancing Based on weight NO YES YES Regex Based routing NO YES YES Query Caching NO YES YES
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- 38. Thank you!