Communities I'm a member of

elasticsearch勉強会

• Tokyo
• Data Analysis

Lucene/Solr勉強会 #SolrJP

• Tokyo
• Information Systems
• Java
• Data Analysis
• IT infrastructure
• Web

OSC Hokkaido

• Hokkaido
• Open Source

Groonga

• Tokyo
• Data Analysis
• Database

Sapporo.php

• Hokkaido
• PHP

HakodaTech

• Hokkaido

CTF for ビギナーズ

• Osaka
• Security