Micro Benchmarking your Tests using JUnit and JUnitBenchmarks

I recently stumbled upon a nice framework that allows to convert simple JUnit tests into micro benchmarks named JUnitBenchmarks. It allows to set basic benchmark options and and to generate charts by adding some simple annotations and a test rule to your tests. One might argue if it is wise to mix the aspects, testing and benchmarking and I’d agree for sure – nevertheless I think this framework can be handy sometimes so let’s create some benchmarks using JUnit and JUnitBenchmarks.. ...

March 10, 2013 · 8 min · 1508 words · Micha Kops

Helm Snippets

Common operations Add Helm Repository helm repo add NAME URL e.g. for the Bitnami repository: helm repo add bitnami https://charts.bitnami.com/bitnami 1 ↵ "bitnami" has been added to your repositories List Repositories helm repo list 130 ↵ NAME URL bitnami https://charts.bitnami.com/bitnami Searching in a Helm Repository helm search repo wordpress NAME CHART VERSION APP VERSION DESCRIPTION bitnami/wordpress 15.2.30 6.1.1 WordPress is the world's most popular blogging ... bitnami/wordpress-intel 2.1.31 6.1.1 DEPRECATED WordPress for Intel is the most popu... ...

March 1, 2010 · 4 min · 697 words · Micha Kops

Postgres Snippets

Administration & Configuration Connections Show Max Connections (value and source) SELECT setting, source, sourcefile, sourceline FROM pg_settings WHERE name = 'max_connections'; Set Max Connections ALTER system SET max_connections = 250; Kill Connections for a Database SELECT pg_terminate_backend(pid) FROM pg_catalog.pg_stat_activity -- we don't want to kill our own connection WHERE pid != pg_backend_pid() -- we don't want to kill connections to other databases AND datname = 'MYDATABASE' Show Statement Timeout Settings for All Users SELECT r.rolname, (SELECT unnest(s.setconfig) FROM pg_db_role_setting s WHERE s.setrole = r.oid AND s.setconfig::text LIKE '%statement_timeout%' LIMIT 1) AS statement_timeout FROM pg_roles r WHERE r.rolcanlogin ORDER BY r.rolname; ...

March 1, 2010 · 11 min · 2278 words · Micha Kops