The QAN is a special dashboard which enables database administrators and application developers to analyze database queries over periods of time and find performance problems. QAN helps you optimize database performance by making sure that queries are executed as expected and within the shortest time possible. In case of problems, you can see which queries may be the cause and get detailed metrics for them.
Source: PMM Query Analytics
A collection of views, functions and procedures to help MySQL administrators get insight in to MySQL Database usage.
Source: mysql/mysql-sys: The MySQL sys schema
Dynomite and the target storage engine run on the same node. Clients connect to Dynomite, and requests are proxied to either the storage engine on the same node or to Dynomite processes running on other nodes.
Dynomite, inspired by Dynamo whitepaper, is a thin, distributed dynamo layer for different storage engines and protocols. Currently these include Redis and Memcached. Dynomite supports multi-datacenter replication and is designed for high availability.
The ultimate goal with Dynomite is to be able to implement high availability and cross-datacenter replication on storage engines that do not inherently provide that functionality. The implementation is efficient, not complex (few moving parts), and highly performant.
מקור: Netflix/dynomite: A generic dynamo implementation for different k-v storage engines
Also, checkout (alternatives?):
This plugin is a Static Code Analysis tool for PHP (aka inspections in JetBrains products).
– architecture related issues (e.g. design pattern violations)
– weak types control and possible code construct simplifications
– performance issues
– non-optimal, duplicate and suspicious “if” conditions
– validation of magic methods usage
– regular expressions
– validation of exception handling workflow
– compatibility issues
– variety of time-consuming bugs
– PhpUnit API usage
– security issues
מקור: Php Inspections (EA Extended) :: JetBrains Plugin Repository
Netdata is a extremely optimized Linux utility that provides real-time (per second) performance monitoring for Linux systems, applications, SNMP devices, etc.
מקור: Netdata – A Real-Time Performance Monitoring Tool for Linux Systems
Performs various tests to determine the quality of the Moodle platform
מקור: Moodle plugins directory: Moodle Benchmark
Set of shell scripts to run Moodle performance tests using different hardware and configurations and compare results.
mytop (Monitor mysql process list with top like screen updates and adiditonal stats like cpu/io usage)
מקור: mytop (Monitor mysql process list with top like screen updates and adiditonal stats like cpu/io usage)
Replace Your Memcached Tier with #Couchbase Are you dealing with memcached problems like cold cache, heavy contention of RDBMS resources and lack of scale-out flexibility? Couchbase Server, a NoSQL database, can be used as a drop-in replacement for your memcached tier to address these challenges.
היה ב-Couchbase as Memcached Alternative | Couchbase.