masahiko

@MasahikoSawada

PostgreSQL Committer and Major Contributor.

Greater Seattle Area, Washington

107

Followers

Following

Public Repos

Private Repos

Language Breakdown

Lines of code distribution across 39 owned repositories

181.4M Total LOC

153,667,122 lines

84.7%

N/A

PLpgSQL

11,530,270 lines

6.4%

N/A

Perl

5,110,518 lines

2.8%

N/A

C++

2,674,172 lines

1.5%

N/A

Yacc

2,479,274 lines

1.4%

N/A

Other

5,931,924 lines

3.3%

N/A

I-Shaped Developer

I-shaped

Specialist — deep expertise in C

PLpgSQL

Perl

C++

Yacc

Collaboration Network

Global Impact visualization

LIVE

0 active collaborators

Repos

PRs

Growth

+18%

Top Collaborators

No collaborator data yet.

Coding Streak

Contribution activity over the past year

1 day

158

Contributions

144

Commits

Pull Requests

Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun

Based on GitHub activity

Less

Followers 107

yowls

@yowls

younsojung

@younsojung

Valeh Agayev

@valehdba

S4IL

@S4IL21

Anurag Bandyopadhyay

@SoulPancake

View All

Following

5 total

Nicholas Nethercote

@nnethercote

Rich Felker

@richfelker

Evan Martin

@evmar

David Peter

@sharkdp

Rui Ueyama

@rui314

Synced via GitHub

Top Repositories

pg_simula

A database system failure simulation tool for PostgreSQL

56 4

pg_keeper

Simplified clustering module for PostgreSQL

36 4

civ

A simple CSV interactive viewer written in Go

32 1

pg_walview

A modernized, interactive TUI alternative to pg_waldump for exploring PostgreSQL Write-Ahead Logs.

23 1

Rust

pgroad

PostgreSQL table access method for Read-Only Archived Data (ROAD).

20 2

pg_cgroup

A PostgreSQL extension to manage cgroup (Control Group)

8 2

walker

A simple, pluggable background worker for PostgreSQL, walking over WAL

8 0

fluent-plugin-pg-logical

Fluentd input plugin to track of changes on PostgreSQL server using logical decoding.

7 1

Ruby

pg_raft

Raft consensus algorithm implementation in PostgeSQL

4 0

pgtools

Useful PostgreSQL extension modules

3 6

Open Source Impact

Contributions to external projects

46 merged PRs

slonikevents/2026-pgconfdev-site

Contributed to 5 repositories