spacecowboy
@spacecowboy17.bsky.social
Interests in ML and social aspects of tech.
Building For You feed: https://bsky.app/profile/spacecowboy17.bsky.social/feed/for-you
Hobby project: linklonk.com
Building For You feed: https://bsky.app/profile/spacecowboy17.bsky.social/feed/for-you
Hobby project: linklonk.com
Here is a very rough version of the For You Stats dashboard: linklonk.com/foryou
It shows you 3 things:
- how much you've been using For You
- how many views and likes your posts got in For You
- how your likes/reposts helped surface posts to other people in For You
Feedback welcome
It shows you 3 things:
- how much you've been using For You
- how many views and likes your posts got in For You
- how your likes/reposts helped surface posts to other people in For You
Feedback welcome
February 15, 2026 at 3:41 PM
Here is a very rough version of the For You Stats dashboard: linklonk.com/foryou
It shows you 3 things:
- how much you've been using For You
- how many views and likes your posts got in For You
- how your likes/reposts helped surface posts to other people in For You
Feedback welcome
It shows you 3 things:
- how much you've been using For You
- how many views and likes your posts got in For You
- how your likes/reposts helped surface posts to other people in For You
Feedback welcome
Added the "corater decay" parameter to the feed as described in the quoted thread.
Values:
- 0 has no effect.
- 0.2 discounts second most recent like by 20%, third most recent like gets discounted twice by 20%, etc.
- 1 - only their most recent like has any weight.
Values:
- 0 has no effect.
- 0.2 discounts second most recent like by 20%, third most recent like gets discounted twice by 20%, etc.
- 1 - only their most recent like has any weight.
5. Progressively decay the weight of the curator - their most recent like gets full weight, N-1 = 0.9 * weight, N-2 = 0.9 * 0.9 * weight => increases curator level diversity
Lots of things to A/B test!
Lots of things to A/B test!
February 13, 2026 at 1:49 PM
Added the "corater decay" parameter to the feed as described in the quoted thread.
Values:
- 0 has no effect.
- 0.2 discounts second most recent like by 20%, third most recent like gets discounted twice by 20%, etc.
- 1 - only their most recent like has any weight.
Values:
- 0 has no effect.
- 0.2 discounts second most recent like by 20%, third most recent like gets discounted twice by 20%, etc.
- 1 - only their most recent like has any weight.
I'm thinking of building a logged in version of the For You playground: linklonk.com/bluesky
It could have some personal stats and settings.
What would you like to see/do on that page?
It could have some personal stats and settings.
What would you like to see/do on that page?
Bluesky "For You" feed playground
linklonk.com
February 7, 2026 at 9:39 PM
I'm thinking of building a logged in version of the For You playground: linklonk.com/bluesky
It could have some personal stats and settings.
What would you like to see/do on that page?
It could have some personal stats and settings.
What would you like to see/do on that page?
Yes, For You was down for 30 minutes - the computer hanged and I had to reboot it to bring it up again.
Not clear what caused it. One option is that there is an issue with power management. My system drive already used to have random hangs for ~30-60 seconds due to power state transitions.
Not clear what caused it. One option is that there is an issue with power management. My system drive already used to have random hangs for ~30-60 seconds due to power state transitions.
@spacecowboy17.bsky.social The best BlueSky feed seems to be down 😭
February 4, 2026 at 1:03 PM
Yes, For You was down for 30 minutes - the computer hanged and I had to reboot it to bring it up again.
Not clear what caused it. One option is that there is an issue with power management. My system drive already used to have random hangs for ~30-60 seconds due to power state transitions.
Not clear what caused it. One option is that there is an issue with power management. My system drive already used to have random hangs for ~30-60 seconds due to power state transitions.
A small tweak to reduce "Show less like this" in For You by 36%
Dynamic time decay
spacecowboy17.leaflet.pub
February 1, 2026 at 9:11 PM
A small tweak to reduce "Show less like this" in For You by 36%
The For You feed will be down for a few minutes.
I need to restart the computer to try resolve Steam segfaults (probably another nvidia driver update?)
Will use this opportunity to enable RAM EXPO profile (4800 -> 6000) which got reset during the CPU upgrade.
I need to restart the computer to try resolve Steam segfaults (probably another nvidia driver update?)
Will use this opportunity to enable RAM EXPO profile (4800 -> 6000) which got reset during the CPU upgrade.
February 1, 2026 at 3:29 PM
The For You feed will be down for a few minutes.
I need to restart the computer to try resolve Steam segfaults (probably another nvidia driver update?)
Will use this opportunity to enable RAM EXPO profile (4800 -> 6000) which got reset during the CPU upgrade.
I need to restart the computer to try resolve Steam segfaults (probably another nvidia driver update?)
Will use this opportunity to enable RAM EXPO profile (4800 -> 6000) which got reset during the CPU upgrade.
@jaz.sh either your dashboard has a glitch (more likely) or Bluesky has become super popular today (🤞) bsky.jazco.dev/stats
January 29, 2026 at 1:33 PM
@jaz.sh either your dashboard has a glitch (more likely) or Bluesky has become super popular today (🤞) bsky.jazco.dev/stats
Tested today how much difference the 3D V-cache makes for For You and 3D V-Cache is indeed helpful.
When I pin the algorithm to run only on CCD 0 (3D V-Cache) I get 25% faster runtime than when running on CCD 1 (standard cache)
So it did make sense to get 9950X3D instead of the 9950X.
When I pin the algorithm to run only on CCD 0 (3D V-Cache) I get 25% faster runtime than when running on CCD 1 (standard cache)
So it did make sense to get 9950X3D instead of the 9950X.
I'd argue the 9950X would've been a better choice since a server like that doesn't really benefit from 3D V-Cache much
January 24, 2026 at 10:21 PM
Tested today how much difference the 3D V-cache makes for For You and 3D V-Cache is indeed helpful.
When I pin the algorithm to run only on CCD 0 (3D V-Cache) I get 25% faster runtime than when running on CCD 1 (standard cache)
So it did make sense to get 9950X3D instead of the 9950X.
When I pin the algorithm to run only on CCD 0 (3D V-Cache) I get 25% faster runtime than when running on CCD 1 (standard cache)
So it did make sense to get 9950X3D instead of the 9950X.
For You has become the most liked feed: bluefacts.app/feeds/top
Thanks everyone who gave it a like!
Liking a feed may seem meaningless, but I think it does matter to the feed creators. It definitely has been motivating for me.
Consider going over the feeds you have pinned and giving them a like!
Thanks everyone who gave it a like!
Liking a feed may seem meaningless, but I think it does matter to the feed creators. It definitely has been motivating for me.
Consider going over the feeds you have pinned and giving them a like!
January 24, 2026 at 4:22 PM
For You has become the most liked feed: bluefacts.app/feeds/top
Thanks everyone who gave it a like!
Liking a feed may seem meaningless, but I think it does matter to the feed creators. It definitely has been motivating for me.
Consider going over the feeds you have pinned and giving them a like!
Thanks everyone who gave it a like!
Liking a feed may seem meaningless, but I think it does matter to the feed creators. It definitely has been motivating for me.
Consider going over the feeds you have pinned and giving them a like!
Wrapping up another For You experiment. This time I've been testing a change that spreads apart posts from the same author or posts quoting the same post.
Context: bsky.app/profile/spac...
Context: bsky.app/profile/spac...
In For You I started tracking the post author and the quoted post id.
I want to use these to improve the diversity of For You.
What do you think should be the distance:
1. between posts of the same author
2. between quotes of the same post
?
I want to use these to improve the diversity of For You.
What do you think should be the distance:
1. between posts of the same author
2. between quotes of the same post
?
January 24, 2026 at 12:49 AM
Wrapping up another For You experiment. This time I've been testing a change that spreads apart posts from the same author or posts quoting the same post.
Context: bsky.app/profile/spac...
Context: bsky.app/profile/spac...
Reposted by spacecowboy
How about this?
"If you are reading this, you've opened For You 100+ times without liking the feed🙀
If you enjoy it, tap ❤️ on the feed page to help others discover it!"
"If you are reading this, you've opened For You 100+ times without liking the feed🙀
If you enjoy it, tap ❤️ on the feed page to help others discover it!"
January 21, 2026 at 1:31 PM
How about this?
"If you are reading this, you've opened For You 100+ times without liking the feed🙀
If you enjoy it, tap ❤️ on the feed page to help others discover it!"
"If you are reading this, you've opened For You 100+ times without liking the feed🙀
If you enjoy it, tap ❤️ on the feed page to help others discover it!"
🤦♂️Sorry, For You was down due to a new code change that I implemented yesterday and I discovered the feed was down this morning.
January 20, 2026 at 11:28 AM
🤦♂️Sorry, For You was down due to a new code change that I implemented yesterday and I discovered the feed was down this morning.
For You is down due to the migration to a new VPS server. Trying to figure out what is wrong. It was very close to working out but Claude went off rails a bit :)
January 17, 2026 at 10:03 PM
For You is down due to the migration to a new VPS server. Trying to figure out what is wrong. It was very close to working out but Claude went off rails a bit :)
I'm using a VPS on OVH to host linklonk.com which serves the For You feed. The real processing is happening on my home PC and the VPS is mostly responsible for proxying the traffic.
It means that the VPS can be fairly small: 2 vCores, 4GB ram, 80GB storage has been fine for my needs.
It means that the VPS can be fairly small: 2 vCores, 4GB ram, 80GB storage has been fine for my needs.
January 17, 2026 at 4:48 PM
I'm using a VPS on OVH to host linklonk.com which serves the For You feed. The real processing is happening on my home PC and the VPS is mostly responsible for proxying the traffic.
It means that the VPS can be fairly small: 2 vCores, 4GB ram, 80GB storage has been fine for my needs.
It means that the VPS can be fairly small: 2 vCores, 4GB ram, 80GB storage has been fine for my needs.
Reposted by spacecowboy
We appreciate where your priorities are!
January 17, 2026 at 12:14 AM
We appreciate where your priorities are!
Fun fact, playing Overwatch increases For You response time from 90ms to 115ms.
January 16, 2026 at 12:53 AM
Fun fact, playing Overwatch increases For You response time from 90ms to 115ms.
In For You I started tracking the post author and the quoted post id.
I want to use these to improve the diversity of For You.
What do you think should be the distance:
1. between posts of the same author
2. between quotes of the same post
?
I want to use these to improve the diversity of For You.
What do you think should be the distance:
1. between posts of the same author
2. between quotes of the same post
?
January 11, 2026 at 5:45 PM
In For You I started tracking the post author and the quoted post id.
I want to use these to improve the diversity of For You.
What do you think should be the distance:
1. between posts of the same author
2. between quotes of the same post
?
I want to use these to improve the diversity of For You.
What do you think should be the distance:
1. between posts of the same author
2. between quotes of the same post
?
This appears to be common feedback. Also, content with most "show less like this" appears to be NSFW content.
I'm adding tracking of self-tagged and Bluesky moderation labels on posts. With this information I should be able to demote/filter NSFW labeled content if you have not liked such content.
I'm adding tracking of self-tagged and Bluesky moderation labels on posts. With this information I should be able to demote/filter NSFW labeled content if you have not liked such content.
For you is so unpredictable with the ocassional porn im just scrolling my following feed in public atp...
January 11, 2026 at 1:37 AM
This appears to be common feedback. Also, content with most "show less like this" appears to be NSFW content.
I'm adding tracking of self-tagged and Bluesky moderation labels on posts. With this information I should be able to demote/filter NSFW labeled content if you have not liked such content.
I'm adding tracking of self-tagged and Bluesky moderation labels on posts. With this information I should be able to demote/filter NSFW labeled content if you have not liked such content.
It would be great if Bluesky published the IP addresses that they use to make requests to feed generators.
I'd like to increase the per-ip request limits. Right now I watch the Nginx error logs and add them one at a time.
So far I've got:
67.213.161.34
209.249.133.122
38.120.64.66
147.123.139.102
I'd like to increase the per-ip request limits. Right now I watch the Nginx error logs and add them one at a time.
So far I've got:
67.213.161.34
209.249.133.122
38.120.64.66
147.123.139.102
January 6, 2026 at 12:07 AM
It would be great if Bluesky published the IP addresses that they use to make requests to feed generators.
I'd like to increase the per-ip request limits. Right now I watch the Nginx error logs and add them one at a time.
So far I've got:
67.213.161.34
209.249.133.122
38.120.64.66
147.123.139.102
I'd like to increase the per-ip request limits. Right now I watch the Nginx error logs and add them one at a time.
So far I've got:
67.213.161.34
209.249.133.122
38.120.64.66
147.123.139.102
Made some improvements that should help For You handle such load spikes in the future:
1. 2x more powerful CPU
2. Bigger in-memory cache sizes so we don't need to read from the DB for >99% of the requests
3. Use a simpler version of the algorithm when under load
1. 2x more powerful CPU
2. Bigger in-memory cache sizes so we don't need to read from the DB for >99% of the requests
3. Use a simpler version of the algorithm when under load
@bsky.app created a featured feed post for For You but it overloaded my computer and they agreed to delete it for now.
The request processing time jumped from 0.2s to 50s. It is getting down to 45s, but it is not recovering super well.
The request processing time jumped from 0.2s to 50s. It is getting down to 45s, but it is not recovering super well.
I don’t know why it was deleted bsky.app/profile/spac...
December 30, 2025 at 6:20 PM
Made some improvements that should help For You handle such load spikes in the future:
1. 2x more powerful CPU
2. Bigger in-memory cache sizes so we don't need to read from the DB for >99% of the requests
3. Use a simpler version of the algorithm when under load
1. 2x more powerful CPU
2. Bigger in-memory cache sizes so we don't need to read from the DB for >99% of the requests
3. Use a simpler version of the algorithm when under load
Here are the results of the quoted experiment after 9 days:
- 5.6% fewer users are pressing "show less like this" (statistically significant with p=0.95)
- 7.36% fewer "show less like this" interactions (68,195 -> 63,173)
- 1.64% more likes on posts (2,319,961 -> 2,357,938)
- 5.6% fewer users are pressing "show less like this" (statistically significant with p=0.95)
- 7.36% fewer "show less like this" interactions (68,195 -> 63,173)
- 1.64% more likes on posts (2,319,961 -> 2,357,938)
December 30, 2025 at 3:47 AM
Here are the results of the quoted experiment after 9 days:
- 5.6% fewer users are pressing "show less like this" (statistically significant with p=0.95)
- 7.36% fewer "show less like this" interactions (68,195 -> 63,173)
- 1.64% more likes on posts (2,319,961 -> 2,357,938)
- 5.6% fewer users are pressing "show less like this" (statistically significant with p=0.95)
- 7.36% fewer "show less like this" interactions (68,195 -> 63,173)
- 1.64% more likes on posts (2,319,961 -> 2,357,938)
The For You feed is going to be down while I'm upgrading the CPU from AMD 7900 (12 core) to AMD 9950X3D (16 core).
This should increase how many users it can serve by ~50%-100%.
If all goes well it should be back up in an hour or two.
This should increase how many users it can serve by ~50%-100%.
If all goes well it should be back up in an hour or two.
December 28, 2025 at 4:40 PM
The For You feed is going to be down while I'm upgrading the CPU from AMD 7900 (12 core) to AMD 9950X3D (16 core).
This should increase how many users it can serve by ~50%-100%.
If all goes well it should be back up in an hour or two.
This should increase how many users it can serve by ~50%-100%.
If all goes well it should be back up in an hour or two.
⚠️WARNING⚠️
@spacecowboy17.bsky.social IS THE ONLY HANDLE SC has, do not trust any paypal links from others,
REPORT ANY FAKE ACCOUNTS
@spacecowboy17.bsky.social IS THE ONLY HANDLE SC has, do not trust any paypal links from others,
REPORT ANY FAKE ACCOUNTS
December 26, 2025 at 11:53 PM
Thanks everyone for offering to pitch in to support the For You feed!
I want to keep it as a pure hobby project with no financial side. I'm fine to do this indefinitely, so please don't worry about the sustainability.
I want to keep it as a pure hobby project with no financial side. I'm fine to do this indefinitely, so please don't worry about the sustainability.
seconding the question, do you have a patreon or something to contribute to for the For You feed?
December 26, 2025 at 10:13 PM
Thanks everyone for offering to pitch in to support the For You feed!
I want to keep it as a pure hobby project with no financial side. I'm fine to do this indefinitely, so please don't worry about the sustainability.
I want to keep it as a pure hobby project with no financial side. I'm fine to do this indefinitely, so please don't worry about the sustainability.
The For You feed is overloaded right now. Please try again in a minute or two.
December 26, 2025 at 7:10 PM
The For You feed is overloaded right now. Please try again in a minute or two.