Rapid Asynchronous and Distributed Computing R package rush version 1.2.1 Package to tackle large-scale problems asynchronously across a distributed network. Employing a database centric model, rush enables workers to communicate tasks and their results over a shared 'Redis' database. Key features include low task overhead, efficient caching, and robust error handling. The package powers the asynchronous optimization algorithms in the 'bbotk' and 'mlr3tuning' packages. Software Depends: R (>= 3.6.0) Imports: checkmate, data.table, ids, jsonlite, lgr (>= 0.5.0), mirai (>= 2.5.0), mlr3misc (>= 0.20.0), processx, R6, redux, uuid Suggests: callr, knitr, lhs, quarto, ranger, rmarkdown, testthat (>= 3.0.0), xgboost Marc Becker <marcbecker@posteo.de> Comprehensive R Archive Network (CRAN) Marc Becker [cre, aut, cph] (ORCID: <https://orcid.org/0000-0002-8115-0400>) MIT + file LICENSE (https://CRAN.R-project.org/package=rush/LICENSE) 2026-07-24 application/tgz https://CRAN.R-project.org/package=rush doi:10.32614/CRAN.package.rush