By Mats Kindahl, Lars Thalmann
Server bottlenecks and screw ups are a truth of lifestyles in any database deployment, yet they don’t need to convey every little thing to a halt. This functional publication explains replication, cluster, and tracking positive factors which could aid defend your MySQL process from outages, even if it’s operating on undefined, digital machines, or within the cloud.
Written by means of engineers who designed a number of the instruments coated, this ebook unearths undocumented or hard-to-find features of MySQL reliability and excessive availability—knowledge that’s crucial for any association utilizing this database approach. This moment variation describes huge alterations to MySQL instruments. models as much as 5.5 are coated, in addition to a number of 5.6 features.
- Learn replication basics, together with use of the binary log and MySQL Replicant Library
- Handle failing elements via redundancy
- Scale out to control read-load raises, and use information sharding to deal with huge databases and write-load increases
- Store and reflect information on person nodes with MySQL Cluster
- Monitor database job and function, and significant working process parameters
- Keep music of masters and slaves, and care for mess ups and restarts, corruption, and different incidents
- Examine instruments together with MySQL company display screen, MySQL Utilities, and GTIDs
Preview of MySQL High Availability: Tools for Building Robust Data Centers PDF
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Extra info for MySQL High Availability: Tools for Building Robust Data Centers
Not like the instance implementation used prior, mysqlnd_ms makes use of a configuration dossier containing information regarding the place to failover. which means it's very effective (all the information is in memory), but in addition that it's static. the knowledge in regards to the masters and the slaves is saved in a configuration dossier in JSON structure just like the dossier in instance 6-6. the following, the grasp is thought to be read-write and the slaves are all read-only servers. instance 6-6. instance of mysqlnd_ms configuration dossier { "myapp": { "master": [ { "host": "master1. instance. com" } ], "slave": [ { "host": "slave1. instance. com", "port": "3306" }, { "host": "slave2. instance. com", "port": "3307" }, { "host": "slave3. instance. com", "port": "3308" } ] } } } whilst a connection is confirmed, the hostname is used as a key into the constitution in instance 6-6, and if a fit is located, the relationship info in a single of the entries below the secret's used as an alternative. Which connection info is used relies on the coverage set for the weight balancer. the burden balancer investigates the assertion to come to a decision the place to ship it. Any assertion beginning with decide on is taken into account a read-only assertion and should be despatched to the slave, whereas the other assertion is shipped to the grasp. you will discover instance code for utilizing mysqlnd_ms in instance 6-7. instance 6-7. personal home page code for utilizing mysqlnd_ms $QUERY = <<