Tools/libraries for gathering statistics of a high-load project?

Question

PHP

It is necessary to implement monitoring of a highly loaded (tens of thousands of requests per minute) project in PHP for a number of indicators. The first thing that came to mind was to write data directly from the code to the memcache, then perform aggregation and build graphs. What ready-made solutions/sets of libraries exist to implement the task?
I looked towards munin - it lacks the ability to build complex custom graphics, but such a plugin system would fit perfectly.

Answer 1

habrahabr.ru/company/bitrix/blog/144482/#habracut ?

Answer 2

Pinba makes excellent reports and timers , writes very quickly, makes reports himself, collects aggregates, graphs, respectively, separately in prd for example.

Answer 3

habrahabr.ru/company/badoo/blog/149695 by the way