History

The project's life, one year at a time, told from the commit record: how activity rose and fell against the project's own baseline, who arrived when, and what was released.

Span
2009 – 2026
18 years
Peak Year
2014
4,150 commits
Releases
246
latest in 2026
2009BIRTHfirst commits

1,025 commits (3.2%) · +224,081 / −154,902 lines · 7 authors

Led by Jonathan Ellis (870 commits)

First commits: Jonathan Ellis, Eric Evans, Avinash Lakshman, Jun Rao, Chris Goffinet, Gary Dusbabek (+1 more)

2010STEADY

1,862 commits (5.7%) · +190,809 / −109,500 lines · 9 authors

Led by Jonathan Ellis (1,099 commits)

First commits: Brandon Williams, Johan Oskarsson, Laine Jaakko Olavi, Joe Schaefer

2011SURGEwell above the usual pace

2,851 commits (8.8%) · +211,426 / −165,893 lines · 8 authors

Led by Jonathan Ellis (1,524 commits)

First commits: Sylvain Lebresne, Pavel Yaskevich, T Jake Luciani

Released: cassandra-0.8.0-rc1

2012SURGEwell above the usual pace

2,605 commits (8.0%) · +135,896 / −71,044 lines · 17 authors

Led by Jonathan Ellis (903 commits)

First commits: Vijay, Yuki Morishita, Dave Brosius, Aleksey Yeshchenko, paul cannon, Peter Schuller (+4 more)

Released: cassandra-1.0.7, cassandra-0.8.10, cassandra-1.1.0-beta1, cassandra-1.0.8, cassandra-1.1.0-beta2 (+19 more)

2013SURGEwell above the usual pace

3,142 commits (9.7%) · +148,211 / −86,920 lines · 26 authors

Led by Jonathan Ellis (997 commits)

First commits: Jason Brown, Marcus Eriksson, jluciani@bluemountaincapital.com, belliottsmith, lyubent, lantao yan (+9 more)

Released: cassandra-1.1.9, cassandra-1.2.1, cassandra-1.1.10, cassandra-1.2.2, cassandra-1.2.3 (+21 more)

2014PEAKbusiest year

4,150 commits (12.8%) · +192,523 / −128,658 lines · 78 authors

Led by Brandon Williams (776 commits)

First commits: Benedict Elliott Smith, Josh McKenzie, Sam Tunnicliffe, Robert Stupp, blerer, Rajanarayanan Thottuvaikkatumana (+52 more)

Released: cassandra-1.2.14, cassandra-1.2.15, cassandra-2.0.5, cassandra-2.1.0-beta1, cassandra-2.0.6 (+19 more)

2015SURGEwell above the usual pace

3,910 commits (12.0%) · +288,568 / −129,540 lines · 124 authors

Led by Benedict Elliott Smith (399 commits)

First commits: Stefania Alborghetti, Ariel Weisberg, Jeff Jirsa, Joel Knighton, Stefan Podkowinski, Marcus Olsson (+76 more)

Released: cassandra-2.0.12, cassandra-2.1.3, cassandra-2.0.13, cassandra-2.0.14, cassandra-2.1.4 (+26 more)

2016SURGEwell above the usual pace

2,786 commits (8.6%) · +178,094 / −179,766 lines · 132 authors

Led by Sylvain Lebresne (314 commits)

First commits: Alex Petrov, mck, Geoffrey Yu, Corentin Chary, Ben Slater, Mahdi Mohammadi (+65 more)

Released: cassandra-3.2, cassandra-2.1.13, cassandra-2.2.5, cassandra-3.0.3, cassandra-3.3 (+18 more)

2017STEADY

1,406 commits (4.3%) · +74,071 / −29,372 lines · 112 authors

Led by Jeff Jirsa (117 commits)

First commits: Jaydeepkumar Chovatia, Matt Byrd, ghatwala, Fedor Bobin, mszczygiel, dr3s (+52 more)

Released: cassandra-3.10, cassandra-2.1.17, cassandra-2.2.9, cassandra-3.0.11, cassandra-3.0.12 (+8 more)

2018STEADY

705 commits (2.2%) · +98,941 / −24,863 lines · 80 authors

Led by Jason Brown (68 commits)

First commits: Dinesh A. Joshi, Joseph Lynch, Sumanth Pasupuleti, Michael Burman, Shichao An, Alex Ott (+32 more)

Released: cassandra-2.1.20, cassandra-3.0.16, cassandra-2.2.12, cassandra-3.11.2, cassandra-2.2.13 (+2 more)

2019QUIETwell below the usual pace

474 commits (1.5%) · +83,270 / −34,746 lines · 60 authors

Led by Michael Shuler (62 commits)

First commits: Ekaterina Dimitrova, Doug Rohrer, Yifan Cai, Liudmila Kornilova, David Capwell, Zephyr Guo (+21 more)

Released: cassandra-2.1.21, cassandra-2.2.14, cassandra-3.0.18, cassandra-3.11.4, cassandra-4.0-alpha1 (+4 more)

2020STEADY

1,035 commits (3.2%) · +358,543 / −36,206 lines · 77 authors

Led by mck (215 commits)

First commits: jacek-lewandowski, Erick Ramirez, bryn, Gianluca Righetto, Stephen Mallette, Kevin Gallardo (+26 more)

Released: cassandra-4.0-alpha3, cassandra-2.2.16, cassandra-3.0.20, cassandra-3.11.6, cassandra-4.0-alpha4 (+14 more)

2021STEADY

1,206 commits (3.7%) · +179,302 / −66,386 lines · 73 authors

Led by Brandon Williams (183 commits)

First commits: Aleksei Zotov, Kanthi Subramanian, Jeff Widman, Francisco Guerrero, Alexandre Dutra, maulin-vasavada (+24 more)

Released: cassandra-3.0.24, cassandra-3.11.10, cassandra-4.0-rc1, cassandra-4.0-rc2, cassandra-3.0.25 (+2 more)

2022STEADY

1,115 commits (3.4%) · +324,251 / −82,426 lines · 76 authors

Led by Brandon Williams (162 commits)

First commits: Brad Schoening, jkonisa, Bernardo Botella Corbi, Savni Nagarkar, Maxwell Guo, Maciej Sokol (+34 more)

Released: cassandra-3.0.26, cassandra-3.11.12, cassandra-4.0.2, cassandra-4.0.3, cassandra-4.1-alpha1 (+8 more)

2023STEADY

1,367 commits (4.2%) · +413,221 / −180,916 lines · 88 authors

Led by Stefan Miklosovic (334 commits)

First commits: Daniel Jatnieks, vgali7, timothytu12, Szymon Miężał, Ethan Brown, ningzi.zhan (+26 more)

Released: cassandra-4.1.1, cassandra-4.0.9, cassandra-3.11.15, cassandra-3.0.29, cassandra-4.0.10 (+5 more)

2024STEADY

944 commits (2.9%) · +197,403 / −101,600 lines · 83 authors

Led by Stefan Miklosovic (177 commits)

First commits: Dmitry Konstantinov, Sarma Pydipally, Mohammad Aburadeh, samlightfoot, Tiago Alves, Sunil Ramchandra Pawar (+23 more)

Released: cassandra-4.0.12, cassandra-4.1.4, cassandra-3.0.30, cassandra-3.11.17, cassandra-4.0.13 (+10 more)

2025STEADY

1,007 commits (3.1%) · +221,598 / −60,490 lines · 87 authors

Led by Stefan Miklosovic (241 commits)

First commits: Pranav Shenoy, Arra, Praveen R, Alan Wang, Joel Shepherd, Himanshu Jindal, pranavchaurasia18 (+27 more)

Released: cassandra-3.0.31, cassandra-3.11.18, cassandra-4.0.16, cassandra-4.1.8, cassandra-5.0.3 (+10 more)

2026STEADY

898 commits (2.8%) · +178,136 / −32,667 lines · 79 authors

Led by Stefan Miklosovic (236 commits)

First commits: nivy, Minal Kyada, Alexandre Viau, pwalczak, omniCoder77, koo.taejin (+22 more)

Released: cassandra-4.0.20, cassandra-4.1.11, cassandra-5.0.7, cassandra-6.0-alpha1, cassandra-5.0.8 (+4 more)