article thumbnail

Data Redundancy With the PostgreSQL Citus Extension

Percona

Depending on the configuration, one can tune a hardware RAID for either performance or redundancy. Percona Distribution for PostgreSQL provides the best and most critical enterprise components from the open-source community in a single distribution, designed and tested to work together. The same can be said for Citus data sharding.

C++ 77
article thumbnail

A thorough introduction to bpftrace

Brendan Gregg

hardware Hardware counter-based instrumentation. Sometimes it can be most effective to switch straight to the example file when trying to understand these tools, since the output may be self evident (by design!). ### Man pages There are also man pages for every tool, under /man/man8. usdt User-level statically defined tracing.

Latency 68
article thumbnail

SQL Server I/O Basics Chapter #2

SQL Server According to Bob

​​ With new ​​ innovations ​​ come ​​ new terms, designs, ​​ and ​​ algorithms. This is different from ​​ the reference count design ​​ that was ​​ used in SQL Server 7.0 and ​​ 2000.

Servers 40