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RAIS On Oregon News

Jeremy Echols edited this page Oct 22, 2018 · 4 revisions

RAIS on Oregon News

Historic Oregon Newspapers is our "flagship" project using RAIS, and is in fact the reason RAIS exists. We had a need to serve small, but high-quality files without ballooning our server budget. JP2s are small and high-quality, but tend to be very slow to decode, making them impossible to use for pan-and-zoom software (like Open Seadragon) in any real-time capacity without commercial software. Until RAIS.

The Historic Oregon Newspapers site receives anywhere from 50,000 to 150,000 tile requests per day, and response time is usually below 500ms per tile. It can handle a dozen concurrent requests and still respond in under 1s per tile most of the time.

See Performance for in-depth numbers both from our production system and a load-testing session.

Unlike commercial solutions, RAIS is completely free and a breeze to test out via Docker (see Installation for details).


RAIS can't take all the credit, though. Without OpenJPEG, the open-source libraries which do all the heavy lifting, RAIS couldn't exist.