Jens Alfke
Mobile Architect at Couchbase
California, United States
Summary
🤩
Rockstar🎓
Top SchoolJens Alfke is a seasoned Mobile Architect with over 18 years building high-performance, distributed mobile systems and embedded databases, currently shaping Couchbase Lite and multi-master replication protocols. A longtime Apple alumnus, he helped architect core features in iChat and Safari and later created Couchbase Lite (formerly TouchDB) and the Sync Gateway, blending deep systems expertise with elegant UI sensibilities. His work spans C++, Objective-C, Swift, Go and JNI, with practical contributions to open-source projects like ForestDB and the sockpp C++ socket library that demonstrate a knack for low-level robustness and protocol design. Passionate about P2P, cryptography, decentralized social software and novel data formats, he prefers projects that meaningfully change how people collaborate rather than chasing advertising-driven consumer apps. Based in California and trained at Caltech, Jens pairs academic rigor with decades of production experience and a clear preference for technically interesting, principled engineering.
18 years of coding experience
24 years of employment as a software developer
California Institute of Technology
Stackoverflow
1,955reputation
359kreached
57answers
3questions
Github Skills (37)
socket-io10
filesystem10
c-language10
key-value-store10
endianness10
memory-management10
network-programming10
data-structure10
socket10
network10
data-structures10
error-handling10
cpp10
cprogramming-language10
api-design9
Programming languages (26)
Github contributions (5)
couchbase/forestdb
Apr 2014 - Jun 2016
A Fast Key-Value Storage Engine Based on Hierarchical B+-Tree Trie
Role in this project:
Back-end Developer / Database Engineer
Back-end Developer / Database EngineerContributions:24 commits, 5 comments in 2 years 2 months
Contributions summary:Jens primarily contributed to bug fixes and optimizations within the ForestDB key-value storage engine. Their work included addressing endianness issues, fixing crashes related to memory access, and resolving issues with configuration file parsing. Furthermore, the user improved the API by ensuring consistent setting of document offsets and key lengths, as well as fixing the `fdb_del` function to handle the cases of metaonly reads.
nosql-databasehierarchicalstoragepersistent-storagetrie
fpagliughi/sockpp
Aug 2019 - Dec 2019
Modern C++ socket library.
Role in this project:Back-end Developer
Back-end DeveloperContributions:11 commits, 6 PRs, 11 comments in 3 months
Contributions summary:Jens focused on improving the `sockpp` C++ socket library by addressing several issues and enhancing its functionality. They fixed bugs related to exception handling, memory leaks, and socket closure behavior. The user also introduced new features like a `getaddrinfo_error` class and multi-write capabilities. Their contributions involved modifying core files related to exception handling, socket operations, and stream socket functionality.
cppsocketc-plus-plusmodern-cnetwork
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