R Observatory: Metrics for cachem version 1.1.0

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

cachem

1.1.0Package record

Cache R Objects with Automatic Pruning

38packages dependsuggested by 9

12.9Mdownloads / year

74.0%test coverage

13/13flavors OK

Overview

About

Maintained by Winston ChangCRAN page ↗GitHub ↗Website ↗Declared funder: Posit Software, PBC

Key-value stores with automatic pruning. Caches can limit either their total size or the age of the oldest object (or both), automatically pruning objects to maintain the constraints.

Changes in 1.1.0

Fixed #47: In some cases, with a cache_mem, removing an item could result in the spurious message "nothing to compact" being printed out. (#48)

From NEWS.md in the release

Install

R (CRAN)pak (dev)Ubuntu (r2u)Fedora (COPR)openSUSE (OBS)

install.packages("cachem", repos = "https://cloud.r-project.org/")

Installs the current CRAN release. Prebuilt binaries on Windows and macOS.

if (!requireNamespace("pak", quietly = TRUE))
  install.packages("pak", repos = "https://cloud.r-project.org/")
pak::pak("r-lib/cachem")

Development version from r-lib/cachem. Installs pak first if it is not already available.

Release

# enable cranapt (r2u) if it is not already set up, then install
grep -rqs r2u.stat.illinois.edu /etc/apt/sources.list /etc/apt/sources.list.d/ \
  || curl -fsSL https://raw.githubusercontent.com/eddelbuettel/r2u/master/inst/scripts/add_cranapt_noble.sh | sudo bash
sudo apt install -y r-cran-cachem

Fast Ubuntu binaries via r2u (no compilation). The cranapt setup runs once and is skipped when it is already enabled. We list this channel from recorded r2u download activity rather than from a live index of the repository, so treat it as last known rather than guaranteed.

bspm (used by r2u) also needs make: sudo apt install make

# enable the iucar/cran COPR if it is not already present, then install
ls /etc/yum.repos.d/*iucar*cran*.repo >/dev/null 2>&1 \
  || sudo dnf copr enable -y iucar/cran
sudo dnf install -y R-CRAN-cachem

RPMs from the iucar/cran COPR, rebuilt from CRAN.

For install.packages() integration in R, also: sudo dnf install R-CoprManager

# add the autoCRAN OBS repo (Tumbleweed) if it is missing, then install
zypper -q lr | grep -qi autoCRAN \
  || sudo zypper addrepo https://download.opensuse.org/repositories/devel:/languages:/R:/autoCRAN/openSUSE_Tumbleweed/devel:languages:R:autoCRAN.repo
sudo zypper install -y R-cachem

RPMs auto-built from CRAN on openSUSE OBS (Tumbleweed). We list this channel from recorded autoCRAN download activity rather than from a live index of the repository, so treat it as last known rather than guaranteed.

Health

CRAN checks

13OK

CRAN check page ↗

Slowest check: 2.2 min · r-devel-windows-x86_64

Status changes

OK13 OK2026-08-05
NOTE12 OK, 1 NOTE2026-08-01
OK14 OK2026-03-10

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 1.1.0

READMEYes · 1,942 wordsVignettesNoNEWSYes · 100% structured · mentions 1.1.0Citation fileNoWebsiteYes · pkgdown

Help pages: 4 (1 internal)
Examples that run: 100%1 run in a plain check
Exported functions with examples: 25%
Documented parameters: 100%
Return-value docs: 75%
Help pages citing references: 0%

How these are measured

Downloads

12.9M

CRAN downloads in the past year

Rank #58 · ~35.2K/day · ~1.1M/mo

Releases R versions

Daily download trend is not available in this view yet.

954.5K30 days

3M90 days

12.9M1 year

Compare downloads with other packages →

Also on210.6K r2u9 autocran1.5M conda_forge20.6K c2d4u

How downloads are counted

Repository

r-lib/cachem ↗Organization: r-lib

66Stars

17Forks

12Open issues

8Open PRs

10Releases

170Commits

10Commit identities

170 commits · Last activity 2025-10-20 · +1.5% stars, 30d

Responsiveness

How these are sampled

PRs merged (all time): 92%
Median days to close, 50 most recently updated closed issues: 2
Median days to close, 50 most recently updated closed PRs: 0

Stars over time

2025-09-04 · 612026-09-25 · 66

How these are measured

PracticesBeta

8 development-tooling and community-health practices detected across 5 families in the upstream repository

Checks run against github.com/r-lib/cachem on 2026-10-18.

Continuous integration (1)

GitHub Actions

Docs source (3)

README.Rmdpkgdown

GitHub Pages site last deployed 2023-05-15

pkgdown site last built 2023-05-15, before release 1.1.0 (2024-05-16)

Reproducibility and dev environment (1)

Makefile

CRAN release process (2)

cran-comments.mdrevdep/

Show all practicesHide 1 practice

Lint, format, editor (1)

RStudio project

How this is detected·Detection ruleset v3 (2026-09-26)

Dependencies

Declared dependencies

3 external dependencies (excludes base and recommended)

Installing cachem adds 2 packages (2 with compiled code, 812 KB of source tarballs). Heaviest: rlang 766 KB, fastmap 46 KB.

Depends (0)

none

Imports (2)

rlang fastmap

LinkingTo (0)

none

Suggests (1)

testthat

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

38direct

4,027indirect

Imports 38

Suggested by 9

Show all 47 packagesHide all 47 packages

Depends, Imports or LinkingTo, most downloaded first

Suggests, most downloaded first

ShinyItemAnalysis cfbfastR wehoop theft hydrodownloadR nomisdata theftdlc mongolstats metabodeconplus

How these are counted

Code & Tests

People & History

People (2)

Winston Chang

Author, Maintainer since 1.0.0 (2021)

Posit Software, PBC

Copyright holder, Funder · added in 1.1.0

Listed in earlier versions (1)

RStudio

no longer listed · 1.0.0 to 1.0.8

Releases (10)

Pick two releases to compare their code metrics.

R
R 4.6.0 released · 2026-04-24
R
R 4.5.0 released · 2025-04-11
1.1.0Latest
record
2024-05-16 · current release · diff ↗
R
R 4.4.0 released · 2024-04-24
1.0.8
record
2023-05-01 · diff ↗
R
R 4.3.0 released · 2023-04-21
1.0.7
record
2023-02-24 · diff ↗
R
R 4.2.0 released · 2022-04-22
1.0.6
record
2021-08-19 · diff ↗
R
R 4.1.0 released · 2021-05-18
1.0.5
record
2021-05-15 · diff ↗
1.0.4
record
2021-02-13 · diff ↗
1.0.3
record
2021-02-04 · diff ↗
1.0.2
record
2021-02-03 · diff ↗
1.0.1
record
2021-01-21 · diff ↗
1.0.0
record
2021-01-18

Show 1 earlier eventHide 1 earlier event

R
R 4.0.0 released · 2020-04-24

Package metadata

First published: 2021-01-18
Total releases: 10 / 5 yrs
License: MIT + file LICENSE OSI
Download size: 27 KB

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("cachem")

Format

Chang, W., & Posit Software, PBC, . (2024). cachem: Cache R Objects with Automatic Pruning (Version 1.1.0) [Computer software]. https://doi.org/10.32614/CRAN.package.cachem

This package has no citation file, so citation() returns this entry built from DESCRIPTION.

Cite the R Observatory

For a number measured here: a download total, a coverage figure, an archival date.

Format

APA

Balamuta, J. J. (2026). R Observatory: Metrics for cachem version 1.1.0 [Data set]. HJJB, LLC. Data release v2026-10-21. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-21, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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