Walter Bauer

Walter Bauer is one of the censhare AG founders and is a passionate software designer and engineer with a bee in his bonnet about performance optimization and refactoring.

Walter Bauer 06.12.2012

Yet another compressed bitset with union, intersection and difference implementations

In the last post I introduced a data structure and algorithm to implement a concurrent memory efficient long set and long-to-long map. The long set can be regarded as some kind of compressed bitset. This post focuses on adding the classic bitset operations for union (or), intersection (and) and difference (and-not).
- Technology
Walter Bauer 30.11.2012

Efficient concurrent long set and map

Persistent data structures got a boost because using locks for synchronizing access to data proved to be error prone and cumbersome. We are not talking about database persistence here, but instead about immutable data structures that provide a type of copy-on-write semantics to allow for concurrent reads while performing concurrent data updates (see http://en.wikipedia.org/wiki/Persistent_data_structure and http://de.wikipedia.org/wiki/Copy-On-Write ).
- Technology
Walter Bauer 18.02.2010

File streaming using Java RMI

In client-server applications there's often the need to transfer files between both parties. This blog shows how to implement a file transfer using remote capable input and output streams and how to improve the performance in WAN scenarios where network connections even with good bandwidth still suffer from high latency.
- Technology

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Walter Bauer

Yet another compressed bitset with union, intersection and difference implementations

Efficient concurrent long set and map

File streaming using Java RMI

Learn more

Cookie Policy

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