BadRequestError from verdaccio-memory

[fiesh]

Describe the bug
Verdaccio crashes (or rather verdaccio-memory I suppose)

To Reproduce
Launch /usr/bin/verdaccio --config /etc/verdaccio/config.yaml and create a lot of simultaneous requests (this is done by our CI pipeline launching multiple jobs simultaneously)

Expected behavior
No crash

Configuration File (cat ~/.config/verdaccio/config.yaml)

plugins: /usr/lib/node_modules

uplinks:
  npmjs:
    url: https://registry.npmjs.org/
    maxage: 24h

auth:
  htpasswd:
    file: ./htpasswd

web:
  title: Verdaccio

packages:
  '@*/*':
    access: $all
    publish: $authenticated
    unpublish: $authenticated
    proxy: npmjs

  '**':
    access: $all
    publish: $authenticated
    unpublish: $authenticated
    proxy: npmjs

logs:
  - { type: stdout, format: pretty, level: http }

store:
  memory:
    limit: 4096

listen:
  - "[::]:8080"

I tried playing around with store.memory.limit, but to no avail.

Debugging output

• $ NODE_DEBUG=request verdaccio display request calls (verdaccio <--> uplinks)
  out-request.txt

• $ DEBUG=express:* verdaccio enable extreme verdaccio debug mode (verdaccio api)
  out-extreme.txt

• $ npm -ddd prints:

npm verb cli [ '/usr/bin/node', '/usr/bin/npm', '-ddd' ]
npm info using npm@7.11.2
npm info using node@v16.1.0
npm timing npm:load:whichnode Completed in 2ms
npm timing config:load:defaults Completed in 2ms
npm timing config:load:file:/usr/lib/node_modules/npm/npmrc Completed in 1ms
npm timing config:load:builtin Completed in 2ms
npm timing config:load:cli Completed in 3ms
npm timing config:load:env Completed in 0ms
npm timing config:load:project Completed in 2ms
npm timing config:load:file:/root/.npmrc Completed in 0ms
npm timing config:load:user Completed in 0ms
npm timing config:load:file:/usr/etc/npmrc Completed in 1ms
npm timing config:load:global Completed in 1ms
npm timing config:load:validate Completed in 0ms
npm timing config:load:credentials Completed in 2ms
npm timing config:load:setEnvs Completed in 1ms
npm timing config:load Completed in 13ms
npm timing npm:load:configload Completed in 14ms
npm timing npm:load:setTitle Completed in 0ms
npm timing npm:load:setupLog Completed in 3ms
npm timing npm:load:cleanupLog Completed in 3ms
npm timing npm:load:configScope Completed in 0ms
npm timing npm:load:projectScope Completed in 1ms
npm timing npm:load Completed in 29ms
npm timing config:load:flatten Completed in 4ms
npm <command>

Usage:

npm install        install all the dependencies in your project
npm install <foo>  add the <foo> dependency to your project
npm test           run this project's tests
npm run <foo>      run the script named <foo>
npm <command> -h   quick help on <command>
npm -l             display usage info for all commands
npm help <term>    search for help on <term>
npm help npm       more involved overview

All commands:

    access, adduser, audit, bin, bugs, cache, ci, completion,
    config, dedupe, deprecate, diff, dist-tag, docs, doctor,
    edit, exec, explain, explore, find-dupes, fund, get, help,
    hook, init, install, install-ci-test, install-test, link,
    ll, login, logout, ls, org, outdated, owner, pack, ping,
    prefix, profile, prune, publish, rebuild, repo, restart,
    root, run-script, search, set, set-script, shrinkwrap, star,
    stars, start, stop, team, test, token, uninstall, unpublish,
    unstar, update, version, view, whoami

Specify configs in the ini-formatted file:
    /root/.npmrc
or on the command line via: npm <command> --key=value

More configuration info: npm help config
Configuration fields: npm help 7 config

npm@7.11.2 /usr/lib/node_modules/npm
npm verb exit 0
npm timing npm Completed in 217ms
npm info ok 

• $ npm config get registry prints:

https://registry.npmjs.org/

Additional context
Simply run in an LXD container running Ubuntu 20.04.