benchmarking – Page 8 – Türker Yıldırım

An index that helps reads and halves your write throughput

NoteJuly 13, 20171 min read

Every index is maintained on every insert, update and delete touching its columns, so an index added to fix one report is paid for by every write to…

Redis beyond caching: locks, counters and rate limits

Deep diveOctober 11, 20169 min read

The cache server was already there doing one job out of four. A lock that expires, a release that checks it still owns the lock, and a sliding-window…

Time to first byte is not the number a user feels

NoteSeptember 26, 20161 min read

TTFB measures how long the server took to start responding, which is the part a backend engineer controls and a small fraction of what the visitor experiences. A…

A load test that reuses one connection measures nothing

NoteSeptember 21, 20161 min read

A benchmark hammering one keep-alive connection with a single URL measures the fastest path through the system with every cache warm — which is a real number about…

Docker for Mac replaced the virtual machine

Deep diveJuly 7, 20168 min read

The shared-folder problem that nearly killed this last year is gone. What changes in the compose file, what the new file sharing costs, and where Linux and Mac…

The N+1 queries you did not write

Deep diveJune 3, 20168 min read

1,400 queries on a page showing 40 rows. Eager loading, the difference between with() and load(), and the accessor that no eager load can fix.

Read a huge file line by line in PHP

SnippetApril 14, 20161 min read

Finding the 200 milliseconds nobody could account for

Deep diveMarch 31, 20168 min read

The page took 340ms and the parts added up to 140. Measuring from the first byte nginx sees rather than from the framework boot, and what was hiding…

Time a block of code in PHP

SnippetMarch 24, 20161 min read

Upgrading a production application to PHP 7

Deep diveFebruary 2, 201614 min read

Twice the throughput and half the memory, for a migration that is mostly deletions — plus the four behaviour changes nobody puts in the upgrade notes.