🤝
Make a deal with David Michael Barr
🔒 Paid proposals held safely in escrow — released only when the work's approved.
Followers
36
Account age
4 yrs
💰 Suggested sponsorship rate
$40 – $65 / sponsored post
Estimated from audience size & typical reach — every deal is negotiable and held in SocialDB escrow.
🧰 Free analysis for David Michael Barr
Known for
1 views
I designed and printed a spacer for 6 IDE power cables. The cluster now lives on the shelves above my desk.
1 views
I started questioning my benchmarks because results were becoming fantastic. In response, I built a new binary patch corpus. The process took on the order of 1000 CPU hours but produced about 80k high-quality binary patches.
https://github.com/barrbrain/bsdiff-analysis
1 views
After another deep dive, I can configure ingress with local IP addresses and hostnames. MetalLB assigns addresses from a pool set aside by my WiFi router. Hostnames are advertised by avahi-daemon. Ingress is routed by contour-envoy.
📊 Post engagement
1
Avg engagement / post
2.8%
Engagement vs followers
Apr 2022
On Mastodon since
🔥 Top post: I designed and printed a spacer for 6 IDE power cables. The clus · 1 likes + reposts
📊 Activity & format
Posting cadence
1.4 / week
A lower-frequency account — each post lands with more weight.
Content mix
Mostly text
Recent: 7 text · 5 image · 0 video.
Follower / following
0.8×
Follows 48 back. A more reciprocal / networked account.
Recent posts
View on Mastodon ↗
🔥 Top post
I designed and printed a spacer for 6 IDE power cables. The cluster now lives on the shelves above my desk.
I designed a fastener to hold the front plate flush since there are no sockets or plugs to create inward pressure.
I ran a variation of the binary patch corpus generator with aehobak as the format.
It was able to cover 24% more bytes with a minimal spanning arborescence, excluding lone blobs. This equates to an improvement from covering 55.6% of blobs …
I have recalibrated expectations by benchmarking with the new corpus.
This release of aehobak introduces a format change for optimal compressability.
The intermediate release rolled back diff algorithm changes that didn't scale well.
https…
I started questioning my benchmarks because results were becoming fantastic. In response, I built a new binary patch corpus. The process took on the order of 1000 CPU hours but produced about 80k high-quality binary patches.
https://github…
Adding avahi-daemon was also a hack, replaced by a delegated subdomain. Now, cert-manager and external DNS are both configured with RFC2136.
The quick hack of mounting tmpfs for local storage has been superseded by xfs over iSCSI. Manual setup was a little tedious, but now it just works.
After another deep dive, I can configure ingress with local IP addresses and hostnames. MetalLB assigns addresses from a pool set aside by my WiFi router. Hostnames are advertised by avahi-daemon. Ingress is routed by contour-envoy.
I finally got https://k0sproject.io running on this system. It was blocked on emptyDir mounts backed by NFS and resolved by backing with tmpfs.
There is an opportunity to get closer to the 11-times speed limit due to 91% reduction in RAM accesses. I just need the fastest, lowest memory footprint, suffix array construction for 8-bit inputs up to 64KiB. Optimal for 8KiB would be suf…
The last release was not optimal for highly repetitive inputs. This is now addressed by building the suffix array blocks in reverse and referencing the ranks of the adjacent block in comparisons. The block size is now halved so that the cu…
In the documentation, I do spell out the caveats of the performance claims. In particular, aehobak is intended to be part of a larger storage system. Splitting into blocks and matching similar blocks are external concerns. See rsync, git a…
🐘 Community & instance
Home server
floss.social
Their home server on the fediverse — the instance a creator picks signals the community they belong to.
✅ Link-verified
Verified link
Proved ownership of a website linked on their profile — Mastodon's green-check verification, a real identity signal rather than a paid badge.
On Mastodon since
Apr 2022
An established account with real history on the platform.
💡 Facts
🗓️Joined Mastodon in 2022 — 4 years ago.
👁️Averages 1 views per post.
📤Posts about 1.4× per week.
🛡️ Audience credibility
83/100
Excellent
Credibility score
99%
Real
Real audience
Low
Fake-follower risk
Medium
Data confidence
- Est. 99% real, active audience · Low fake-follower risk.
- Strong engagement (~2.8% of followers engage each post) — an active, real audience.
- Verified account.
- Established account (4+ years old).
Heuristic estimate from engagement, follower ratios, account age & growth — a screening signal, not a guarantee.
About
Fan and author of free and open source software. Informatics olympian, low-order maths geek.
📸 Gallery
🔀 Audience overlap
EstimatedEstimated shared audience with similar creators — useful for avoiding overlap (or doubling down) when planning a campaign.
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