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[Enhancement]: Warning: connect.session() MemoryStore is not designed for a production environment #1679

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opened 2026-04-24 23:54:29 +02:00 by adam · 9 comments
adam commented 2026-04-24 23:54:29 +02:00
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Originally created by @nichwall on GitHub (Jan 20, 2024).

Describe the feature/enhancement

There have been a few reports in recent weeks around express-rate-limit using memory-store. This issue is to provide context.

MemoryStore is not designed for a production environment, as it will leak memory, and will not scale past a single process.

This warning does not matter for ABS, but has been causing some confusion for users.
https://express-rate-limit.mintlify.app/reference/stores

The MemoryStore is only used to provide rate limiting and does not end to be very robust since it is designed for a single server and rebooting does not affect the rate limiting feature for ABS (ABS only tracks for the past 60 seconds).

Potential changes:

  1. Suppress the warning so it doesn't show up at all (don't like that idea)
  2. Use a different storage, such as rate-limit-memcached. That seems to be the lightest replacement but adds a dependency
Originally created by @nichwall on GitHub (Jan 20, 2024). ### Describe the feature/enhancement There have been a few reports in recent weeks around express-rate-limit using `memory-store`. This issue is to provide context. `MemoryStore is not designed for a production environment, as it will leak memory, and will not scale past a single process.` This warning does not matter for ABS, but has been causing some confusion for users. https://express-rate-limit.mintlify.app/reference/stores The MemoryStore is only used to provide rate limiting and does not end to be very robust since it is designed for a single server and rebooting does not affect the rate limiting feature for ABS (ABS only tracks for the past 60 seconds). Potential changes: 1. Suppress the warning so it doesn't show up at all (don't like that idea) 2. Use a different storage, such as `rate-limit-memcached`. That seems to be the lightest replacement but adds a dependency
adam added the enhancement label 2026-04-24 23:54:29 +02:00
adam closed this issue 2026-04-24 23:54:31 +02:00
adam commented 2026-04-24 23:54:31 +02:00
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@zzyzx-dc commented on GitHub (Feb 14, 2024):

Thank you for posting this. I am troubleshooting why Audiobookshelf crashes every week or two and I saw this error message. Good to know it is not related to my issue.

@zzyzx-dc commented on GitHub (Feb 14, 2024): Thank you for posting this. I am troubleshooting why Audiobookshelf crashes every week or two and I saw this error message. Good to know it is not related to my issue.
adam commented 2026-04-24 23:54:32 +02:00
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@nichwall commented on GitHub (Feb 15, 2024):

Thank you for posting this. I am troubleshooting why Audiobookshelf crashes every week or two and I saw this error message. Good to know it is not related to my issue.

Glad it helped!

If you can provide logs around the crash, that will help narrow it down. If you haven't already done so, change your server log level to Debug. You may also need to look at the Docker or systemctl logs (depending on how you are running the server) because those logs can catch more information than ABS itself does for crashes.

Please post those logs/description in a new issue or on Discord so this issue doesn't get a ton of unrelated comments. :)

@nichwall commented on GitHub (Feb 15, 2024): > Thank you for posting this. I am troubleshooting why Audiobookshelf crashes every week or two and I saw this error message. Good to know it is not related to my issue. Glad it helped! If you can provide logs around the crash, that will help narrow it down. If you haven't already done so, change your server log level to Debug. You may also need to look at the Docker or systemctl logs (depending on how you are running the server) because those logs can catch more information than ABS itself does for crashes. Please post those logs/description in a new issue or on Discord so this issue doesn't get a ton of unrelated comments. :)
adam commented 2026-04-24 23:54:32 +02:00
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@Eschguy commented on GitHub (Apr 2, 2024):

Having this issue as well. Based on info logs, mine seems to crash after updating podcasts. I've set the logger to debug and will post results when it crashes next.

INFO logs from crash/startup

{"timestamp":"2024-04-01 15:00:03.285","source":"LibraryItem.js:389","message":"[LibraryItem] Library item \"0246f2a8-adfd-4912-ac7e-8e62049b29b1\" updated","levelName":"INFO","level":2}
{"timestamp":"2024-04-01 15:00:03.285","source":"PodcastManager.js:239","message":"[PodcastManager] runEpisodeCheck: \"Life Kit\" | Last check: Mon Apr 01 2024 14:00:05 GMT-0500 (Central Daylight Time) | Latest episode pubDate: Mon Apr 01 2024 02:00:59 GMT-0500 (Central Daylight Time)","levelName":"INFO","level":2}
{"timestamp":"2024-04-01 15:00:03.711","source":"LibraryItem.js:389","message":"[LibraryItem] Library item \"1ca69716-161f-4285-aaca-86e1716e4f22\" updated","levelName":"INFO","level":2}
{"timestamp":"2024-04-01 15:00:03.711","source":"PodcastManager.js:239","message":"[PodcastManager] runEpisodeCheck: \"Stuff You Missed in History Class\" | Last check: Mon Apr 01 2024 14:00:06 GMT-0500 (Central Daylight Time) | Latest episode pubDate: Mon Apr 01 2024 08:00:00 GMT-0500 (Central Daylight Time)","levelName":"INFO","level":2}
{"timestamp":"2024-04-01 15:00:05.426","source":"LibraryItem.js:389","message":"[LibraryItem] Library item \"0e52ea3a-5943-4e91-847f-a0d87c2722b6\" updated","levelName":"INFO","level":2}
{"timestamp":"2024-04-01 15:00:05.427","source":"PodcastManager.js:239","message":"[PodcastManager] runEpisodeCheck: \"Pod Save America\" | Last check: Mon Apr 01 2024 14:00:07 GMT-0500 (Central Daylight Time) | Latest episode pubDate: Fri Mar 29 2024 02:00:00 GMT-0500 (Central Daylight Time)","levelName":"INFO","level":2}
{"timestamp":"2024-04-01 15:00:05.750","source":"LibraryItem.js:389","message":"[LibraryItem] Library item \"5a9cdb7f-7191-4763-9675-f8ae51a34364\" updated","levelName":"INFO","level":2}
{"timestamp":"2024-04-01 15:00:05.750","source":"PodcastManager.js:239","message":"[PodcastManager] runEpisodeCheck: \"What A Day\" | Last check: Mon Apr 01 2024 14:00:08 GMT-0500 (Central Daylight Time) | Latest episode pubDate: Mon Apr 01 2024 02:05:00 GMT-0500 (Central Daylight Time)","levelName":"INFO","level":2}
{"timestamp":"2024-04-01 15:00:06.379","source":"LibraryItem.js:389","message":"[LibraryItem] Library item \"bde5f1d6-2ede-4404-9feb-daeb4ae98160\" updated","levelName":"INFO","level":2}
{"timestamp":"2024-04-01 21:35:52.087","source":"Server.js:170","message":"=== Starting Server ===","levelName":"INFO","level":2}
{"timestamp":"2024-04-01 21:35:52.088","source":"Server.js:101","message":"[Server] Init v2.8.1","levelName":"INFO","level":2}
{"timestamp":"2024-04-01 21:35:52.315","source":"Database.js:178","message":"[Database] Initializing db at \"/config/absdatabase.sqlite\"","levelName":"INFO","level":2}
{"timestamp":"2024-04-01 21:35:52.521","source":"Database.js:206","message":"[Database] Db connection was successful","levelName":"INFO","level":2}
{"timestamp":"2024-04-01 21:35:53.104","source":"Database.js:167","message":"[Database] Db initialized with models: user, library, libraryFolder, book, podcast, podcastEpisode, libraryItem, mediaProgress, series, bookSeries, author, bookAuthor, collection, collectionBook, playlist, playlistMediaItem, device, playbackSession, feed, feedEpisode, setting, customMetadataProvider","levelName":"INFO","level":2}
{"timestamp":"2024-04-01 21:35:53.262","source":"LogManager.js:66","message":"[LogManager] Init current daily log filename: 2024-04-01.txt","levelName":"INFO","level":2}
{"timestamp":"2024-04-01 21:35:53.327","source":"BackupManager.js:260","message":"[BackupManager] 0 Backups Found","levelName":"INFO","level":2}
{"timestamp":"2024-04-01 21:35:53.331","source":"BackupManager.js:57","message":"[BackupManager] Auto Backups are disabled","levelName":"INFO","level":2}
{"timestamp":"2024-04-01 21:35:53.405","source":"Watcher.js:53","message":"[Watcher] Initializing watcher for \"eBooks\".","levelName":"INFO","level":2}
{"timestamp":"2024-04-01 21:35:53.409","source":"Watcher.js:53","message":"[Watcher] Initializing watcher for \"Audiobooks\".","levelName":"INFO","level":2}
{"timestamp":"2024-04-01 21:35:53.409","source":"Watcher.js:53","message":"[Watcher] Initializing watcher for \"Podcasts\".","levelName":"INFO","level":2}
{"timestamp":"2024-04-01 21:35:53.446","source":"Server.js:319","message":"Listening on port :80","levelName":"INFO","level":2}
{"timestamp":"2024-04-01 21:35:56.632","source":"Watcher.js:79","message":"[Watcher] \"Podcasts\" Ready","levelName":"INFO","level":2}
{"timestamp":"2024-04-01 21:35:58.383","source":"Watcher.js:79","message":"[Watcher] \"Audiobooks\" Ready","levelName":"INFO","level":2}
{"timestamp":"2024-04-01 21:36:02.060","source":"Watcher.js:79","message":"[Watcher] \"eBooks\" Ready","levelName":"INFO","level":2}
@Eschguy commented on GitHub (Apr 2, 2024): Having this issue as well. Based on info logs, mine seems to crash after updating podcasts. I've set the logger to debug and will post results when it crashes next. INFO logs from crash/startup ``` {"timestamp":"2024-04-01 15:00:03.285","source":"LibraryItem.js:389","message":"[LibraryItem] Library item \"0246f2a8-adfd-4912-ac7e-8e62049b29b1\" updated","levelName":"INFO","level":2} {"timestamp":"2024-04-01 15:00:03.285","source":"PodcastManager.js:239","message":"[PodcastManager] runEpisodeCheck: \"Life Kit\" | Last check: Mon Apr 01 2024 14:00:05 GMT-0500 (Central Daylight Time) | Latest episode pubDate: Mon Apr 01 2024 02:00:59 GMT-0500 (Central Daylight Time)","levelName":"INFO","level":2} {"timestamp":"2024-04-01 15:00:03.711","source":"LibraryItem.js:389","message":"[LibraryItem] Library item \"1ca69716-161f-4285-aaca-86e1716e4f22\" updated","levelName":"INFO","level":2} {"timestamp":"2024-04-01 15:00:03.711","source":"PodcastManager.js:239","message":"[PodcastManager] runEpisodeCheck: \"Stuff You Missed in History Class\" | Last check: Mon Apr 01 2024 14:00:06 GMT-0500 (Central Daylight Time) | Latest episode pubDate: Mon Apr 01 2024 08:00:00 GMT-0500 (Central Daylight Time)","levelName":"INFO","level":2} {"timestamp":"2024-04-01 15:00:05.426","source":"LibraryItem.js:389","message":"[LibraryItem] Library item \"0e52ea3a-5943-4e91-847f-a0d87c2722b6\" updated","levelName":"INFO","level":2} {"timestamp":"2024-04-01 15:00:05.427","source":"PodcastManager.js:239","message":"[PodcastManager] runEpisodeCheck: \"Pod Save America\" | Last check: Mon Apr 01 2024 14:00:07 GMT-0500 (Central Daylight Time) | Latest episode pubDate: Fri Mar 29 2024 02:00:00 GMT-0500 (Central Daylight Time)","levelName":"INFO","level":2} {"timestamp":"2024-04-01 15:00:05.750","source":"LibraryItem.js:389","message":"[LibraryItem] Library item \"5a9cdb7f-7191-4763-9675-f8ae51a34364\" updated","levelName":"INFO","level":2} {"timestamp":"2024-04-01 15:00:05.750","source":"PodcastManager.js:239","message":"[PodcastManager] runEpisodeCheck: \"What A Day\" | Last check: Mon Apr 01 2024 14:00:08 GMT-0500 (Central Daylight Time) | Latest episode pubDate: Mon Apr 01 2024 02:05:00 GMT-0500 (Central Daylight Time)","levelName":"INFO","level":2} {"timestamp":"2024-04-01 15:00:06.379","source":"LibraryItem.js:389","message":"[LibraryItem] Library item \"bde5f1d6-2ede-4404-9feb-daeb4ae98160\" updated","levelName":"INFO","level":2} {"timestamp":"2024-04-01 21:35:52.087","source":"Server.js:170","message":"=== Starting Server ===","levelName":"INFO","level":2} {"timestamp":"2024-04-01 21:35:52.088","source":"Server.js:101","message":"[Server] Init v2.8.1","levelName":"INFO","level":2} {"timestamp":"2024-04-01 21:35:52.315","source":"Database.js:178","message":"[Database] Initializing db at \"/config/absdatabase.sqlite\"","levelName":"INFO","level":2} {"timestamp":"2024-04-01 21:35:52.521","source":"Database.js:206","message":"[Database] Db connection was successful","levelName":"INFO","level":2} {"timestamp":"2024-04-01 21:35:53.104","source":"Database.js:167","message":"[Database] Db initialized with models: user, library, libraryFolder, book, podcast, podcastEpisode, libraryItem, mediaProgress, series, bookSeries, author, bookAuthor, collection, collectionBook, playlist, playlistMediaItem, device, playbackSession, feed, feedEpisode, setting, customMetadataProvider","levelName":"INFO","level":2} {"timestamp":"2024-04-01 21:35:53.262","source":"LogManager.js:66","message":"[LogManager] Init current daily log filename: 2024-04-01.txt","levelName":"INFO","level":2} {"timestamp":"2024-04-01 21:35:53.327","source":"BackupManager.js:260","message":"[BackupManager] 0 Backups Found","levelName":"INFO","level":2} {"timestamp":"2024-04-01 21:35:53.331","source":"BackupManager.js:57","message":"[BackupManager] Auto Backups are disabled","levelName":"INFO","level":2} {"timestamp":"2024-04-01 21:35:53.405","source":"Watcher.js:53","message":"[Watcher] Initializing watcher for \"eBooks\".","levelName":"INFO","level":2} {"timestamp":"2024-04-01 21:35:53.409","source":"Watcher.js:53","message":"[Watcher] Initializing watcher for \"Audiobooks\".","levelName":"INFO","level":2} {"timestamp":"2024-04-01 21:35:53.409","source":"Watcher.js:53","message":"[Watcher] Initializing watcher for \"Podcasts\".","levelName":"INFO","level":2} {"timestamp":"2024-04-01 21:35:53.446","source":"Server.js:319","message":"Listening on port :80","levelName":"INFO","level":2} {"timestamp":"2024-04-01 21:35:56.632","source":"Watcher.js:79","message":"[Watcher] \"Podcasts\" Ready","levelName":"INFO","level":2} {"timestamp":"2024-04-01 21:35:58.383","source":"Watcher.js:79","message":"[Watcher] \"Audiobooks\" Ready","levelName":"INFO","level":2} {"timestamp":"2024-04-01 21:36:02.060","source":"Watcher.js:79","message":"[Watcher] \"eBooks\" Ready","levelName":"INFO","level":2} ```
adam commented 2026-04-24 23:54:33 +02:00
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@nichwall commented on GitHub (Apr 2, 2024):

Having this issue as well. Based on info logs, mine seems to crash after updating podcasts. I've set the logger to debug and will post results when it crashes next.

Periodic crashes are unrelated to the MemoryStore warning. This warning is given as part of the startup logs and is not related to the crash. Please open a new issue for debugging the crash.

@nichwall commented on GitHub (Apr 2, 2024): > Having this issue as well. Based on info logs, mine seems to crash after updating podcasts. I've set the logger to debug and will post results when it crashes next. Periodic crashes are unrelated to the MemoryStore warning. This warning is given as part of the startup logs and is not related to the crash. Please open a new issue for debugging the crash.
adam commented 2026-04-24 23:54:34 +02:00
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@github-actions[bot] commented on GitHub (Aug 5, 2024):

Fixed in v2.12.0.

@github-actions[bot] commented on GitHub (Aug 5, 2024): Fixed in [v2.12.0](https://github.com/advplyr/audiobookshelf/releases/tag/v2.12.0).
adam commented 2026-04-24 23:54:34 +02:00
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@nichwall commented on GitHub (Aug 9, 2024):

Reverted in 2.12.2 to prevent the server becoming unresponsive after 24 hours.
https://github.com/advplyr/audiobookshelf/issues/3251

@nichwall commented on GitHub (Aug 9, 2024): Reverted in 2.12.2 to prevent the server becoming unresponsive after 24 hours. https://github.com/advplyr/audiobookshelf/issues/3251
adam commented 2026-04-24 23:54:35 +02:00
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@skyzuma commented on GitHub (Aug 28, 2024):

if have a similar msg (Warning: connect.session() MemoryStore is not
designed for a production environment, as it will leak) on unraid / docker / v2.12.3 ... i have no problems but i dont use podcasts ... so, idk if this msg important ...

@skyzuma commented on GitHub (Aug 28, 2024): if have a similar msg (Warning: connect.session() MemoryStore is not designed for a production environment, **as it will leak**) on unraid / docker / v2.12.3 ... i have no problems but i dont use podcasts ... so, idk if this msg important ...
adam commented 2026-04-24 23:54:35 +02:00
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@nichwall commented on GitHub (Aug 28, 2024):

if have a similar msg (Warning: connect.session() MemoryStore is not
designed for a production environment, as it will leak) on unraid / docker / v2.12.3 ... i have no problems but i dont use podcasts ... so, idk if this msg important ...

See the original message for this thread. This has been updated for the next release.

@nichwall commented on GitHub (Aug 28, 2024): > if have a similar msg (Warning: connect.session() MemoryStore is not > designed for a production environment, **as it will leak**) on unraid / docker / v2.12.3 ... i have no problems but i dont use podcasts ... so, idk if this msg important ... See the original message for this thread. This has been updated for the next release.
adam commented 2026-04-24 23:54:35 +02:00
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@github-actions[bot] commented on GitHub (Aug 31, 2024):

Fixed in v2.13.0.

@github-actions[bot] commented on GitHub (Aug 31, 2024): Fixed in [v2.13.0](https://github.com/advplyr/audiobookshelf/releases/tag/v2.13.0).
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Reference: starred/audiobookshelf#1679
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