Percona

APRIL 10, 2023

mydumper -o data -B test --defaults-file=mydumper.cnf -r 100000 -c real 0m19.964s user 0m48.396s sys 0m7.885s It took near 19.9 mydumper -o data -B test --defaults-file=mydumper.cnf -r 100000 -c real 0m19.964s user 0m48.396s sys 0m7.885s It took near 19.9 sbtest1`] `k`=random_int The backup took 20.7 100>-<file words_alpha.txt.100>-<file

Testing 109

Testing C++ Open Source Database 109

The Netflix TechBlog

JUNE 14, 2023

The three strategies we will discuss today are AB Testing , Replay Testing, and Sticky Canaries. To launch Phase 1 safely, we used AB Testing. To launch Phase 2 safely, we used Replay Testing and Sticky Canaries. We couldn’t replay test GraphQL queries or mutations that requested non-idempotent fields.

Traffic 353

Traffic Latency Cache Metrics 353

SQL Performance

JANUARY 5, 2022

Here’s a simple query roughly matching what our application was doing to the table: DECLARE @p1 int = ABS ( CHECKSUM ( NEWID ( ) ) ) % 10000000 , @p2 int = 7 ; DELETE dbo. Testing the Impact of the Queue. FakeSuggestedEdits. ( million rows each time, but YMMV): -- 2680350 * 5 ~ 3 minutes. . (

Processing 56

Processing C++ Database Storage 56

CSS Wizardry

MAY 21, 2018

The workflow around this tool is pretty straightforward: drop a URL into the Target URL field; select a test location (if geographic locale might affect which third parties are called then this feature may be particularly useful to you). submit a test; and wait. Example questions include: Can you talk me through Google Tag Manager?

Google 114

Google C++ Analytics Website 114

Alex Russell

AUGUST 20, 2015

Years after Prefixpocalypse, everyone who works on a browser understands that prefixes haven’t succeeded in minimizing harm, yet vendors proudly announce new prefixed features and developers blithely (ab)use them. Short duration and small, committed test populations allow for more iteration which should, in the end, lead to better features.

Programming 54

Programming Google Infrastructure Engineering 54