Kouhei Sutou

#ruby

#rubykaigi

#data-processing

#ruby-ecosystem

#native-extensions

#performance

#open-source

#rubygems

#apache-arrow

#dependency-management

#software-development

#community

#optimization

#programming-languages

#api-development

#ruby-extensions

#developer-tools

#programming-techniques

#ruby-development

#quality-assurance-qa

#test-framework

#test-driven-development

#minitest

#testing

#ruby-community

#vulnerability-management

#sinatra

#mysql

#postgresql

#activerecord

#database-performance

#databases

#concurrency

#programming

#cloud-storage

#ractors

#ruby-2-7

#ruby-standard-library

#benchmarking

#workshop

#data-science

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