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Save Money in AWS RDS: Don’t Trust the Defaults

Percona

This message is normally a side effect of a storage subsystem that is not capable of keeping up with the number of writes (e.g., After some time of receiving these messages, eventually, they hit performance issues to the point that the server becomes unresponsive for a few minutes. This was exactly what was happening on this server.

AWS 124
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Why MySQL Could Be Slow With Large Tables

Percona

It can help us to save costs on storage and backup times. While MySQL can handle large data sets, it is always recommended to keep only the used data in the databases, as this will make data access more efficient, and also will help to save costs on storage and backups. MyRocks is shipped in Percona Server for MySQL.

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When Do SQL Server Sorts Rewind?

SQL Performance

Sorts use storage (memory and perhaps disk if they spill) so they do have a facility capable of storing rows between loop iterations. The Sort operator’s rewind behaviour may seem strange, but it has been this way from (at least) SQL Server 2000 to SQL Server 2019 inclusive (as well as Azure SQL Database). Sort Rewinds.

Servers 106
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SQL Server I/O Basics Chapter #1

SQL Server According to Bob

Microsoft SQL Server I/O Basics Author: ​​ Bob Dorr, Microsoft SQL Server Escalation Published: ​​ December, 2004 SUMMARY: ​​ Learn the I/O requirements for Microsoft SQL Server database file operations. This will help you increase system performance and avoid I/O environment errors.

Servers 40
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Quick Data Archival in MySQL Using Partitions

Percona

To speed up the above query we need to create an appropriate index so that the query can be executed in minimal time and have less impact on server performance. If we are using binlog_format as ROW, a huge number of bin logs would be created which could choke I/O of servers and require extra cleanup. What is partitioning?

Traffic 61
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Proof of Concept: Horizontal Write Scaling for MySQL With Kubernetes Operator

Percona

This operation is quite expensive but our database can run it in a few milliseconds or less, thanks to several optimizations that allow the node to execute most of them in memory with no or little access to mass storage. The key factor is that the whole data structure resides in the same location (node), facilitating the operations.

Traffic 127
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SQL 2016 – It Just Runs Faster: DBCC Scales 7x Better

SQL Server According to Bob

SQL Server 2016 changes the internal design to (CheckScanner), applying no lock semantics and a design similar to those used with In-Memory Optimized (Hekaton) objects, allowing DBCC operations to scale far better than previous releases. Ryan Stonecipher – Principle SQL Server Software Engineer. SQL Server. set nocount on.