In episode 209 of R Weekly Highlights we learn ways you can pinpoint just what is slowing down your R code, a novel framing for testing your next plumber API, and the adventures in recreating a NY Times chart entirely with ggplot2.Episode LinksThis week's curator: Jon Carroll - @jonocarroll@fosstodon.org (Mastodon) & @jonocarroll.fosstodon.org.ap.brid.gy (Bluesky) & @carroll_jono (X/Twitter)Speed Testing Code: Three LevelsTesting your Plumber APIs from RCopy the Pros: How to Recreate this NYTimes Chart in REntire issue available at rweekly.org/2025-W31Supplement ResourcesAdd links discussed in the episode (in place of this sentence)Eric and Mike's 2023 Shiny in Production workshop https://posit-conf-2023.github.io/shiny-r-prod/Jakub's R test gallery https://jakubsobolewski.com/r-tests-gallery/plumber2 - Easy and Powerful Webservers in R https://posit-dev.github.io/plumber2/Push straight to prod API development with R and Tensorflow at T-Mobile https://posit.co/resources/videos/push-straight-to-prod-api-development-with-r-and-tensorflow-at-tmobile/VCR R package by Scott Chamberlain https://github.com/ropensci/vcr/GitHub repository with Spencer's ggplot2 code https://github.com/Pecners/make_that_chartSupporting the showUse the contact page at https://serve.podhome.fm/custompage/r-weekly-highlights/contact to send us your feedbackR-Weekly Highlights on the Podcastindex.org - You can send a boost into the show directly in the Podcast Index. First, top-up with Alby, and then head over to the R-Weekly Highlights podcast entry on the index.A new way to think about value: https://value4value.infoGet in touch with us on social mediaEric Nantz: @rpodcast@podcastindex.social (Mastodon), @rpodcast.bsky.social (BlueSky) and @theRcast (X/Twitter) Mike Thomas: @mike_thomas@fosstodon.org (Mastodon), @mike-thomas.bsky.social (BlueSky), and @mike_ketchbrook (X/Twitter) Music credits powered by OCRemixDigital Saṃsāra - Genshin Impact - OceansAndrew - https://ocremix.org/remix/OCR04775Big Earl Funk - ToeJam & Earl - Zach Chapman, Ian Martyn, newmajoe, Ronin Op F, TheManPF - https://ocremix.org/remix/OCR04785