How do you achieve high availability in a database?

How do you achieve high availability in a database?

Key Principles of High Availability

1. Eliminate any single point of failure: Adding redundancy, so that the failure of any one part of the system does not lead to the collapse of the entire system.
2. Reliable crossover: In a redundant system, the crossover point itself becomes a single point of failure.

How make MySQL replicate faster?

Since MySQL server is multi-threaded, the primary is able to write faster than the replicas. To increase that limit, Tungsten Replicator offers Parallel Apply, which employs multiple replication apply threads, one per shard. By default, we shard by database, with one shard created per database schema.

Which database is best for high availability?

NoSQL systems have a reputation for being able to scale out and handle big data problems. These same features can also be used to increase the availability of database servers.

How do you create a high availability system?

Here are some of the key resources you can implement to make high availability possible:

1. Implement multiple application servers.
2. Scaling and slaves matters.
3. Spread out physically.
4. Maintain a recurring online backup system along with hardware.
5. Use of a virtualized server for zero-downtime recovery.

How do I fix MySQL lag replication?

To minimize slave SQL_THREAD lag, focus on query optimization. My recommendation is to enable the configuration option log_slow_slave_statements so that the queries executed by slave that take more than long_query_time will be logged to the slow log.

How can you increase the speed of a replication?

Increasing the number of replication forks. Increase of emphasis of the proof reading process in dna replication. Adding of more eukaryotes complexes and some Rep (replication enhancer proteins) speeding up the process of dna replication making it more efficient for us.