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2 to check How to reach them
average reach a post Substack publishes no view counts, so there is no reach figure here.
free subscribers Not published nothing to show
posts every day across 10 recent posts
last posted 3d ago Read Sep 4, 2026.
Recent post performance
Likes on their last 10 posts
Average likes223
LikesAverage
Aug 20, 2026 to Sep 3, 2026. Oldest to newest.
View post data10 posts
| Post | Date | Likes | Promotion flag |
|---|---|---|---|
| Schema Evolution: Changing the Contract Without Breaking What Runs | 128 | Not flagged | |
| EP223: Ollama vs vLLM vs SGLang | 315 | Not flagged | |
| Why Code Verification Matters More Than Ever in the Age of AI | 348 | Not flagged | |
| How to Steal an AI Model’s Private Thoughts | 256 | Not flagged | |
| How to Make LLMs 3X Faster | 274 | Not flagged | |
| Background Work: From Cron Jobs to Distributed Systems | 102 | Not flagged | |
| What Happens Inside an AI Chatbot Between Enter and the First Word? | 247 | Not flagged | |
| How to Shrink a Language Model Without Making it Too Dumb | 242 | Not flagged | |
| Why Your RAG System Is Only as Good as Its Translator Model | 251 | Not flagged | |
| How Databases Keep Their Sanity with Concurrency Control | 68 | Not flagged |
What we checked
21 checks, 9 passed, 2 to review
| ✓ | Metrics came from the platform | Every audience figure here is a value Substack's own API returned, never estimated or inferred. The price estimate is the one number we work out ourselves, and it is labelled and shows its arithmetic. | not published |
| ✓ | Enough recent posts to judge | 10 recent posts sampled (target 10). | not published |
| ! | Newsletter floor: ≥10,000 free subscribers and ≥20 median reactions | Substack did not publish a free-subscriber count for this publication, so the floor cannot be tested. | required |
| – | Open rate | Nobody publishes a newsletter's open rate: not Substack, not the author. How many subscribers actually opened the email a sponsored slot sat in is unknown, and is not estimated here. The subscriber count is the size of the list, not the size of the audience. | not published |
| ✓ | A sponsored slot would reach the free list | 70% of recent issues go to the whole list, so a sponsored slot reaches the subscriber count shown. | integrity |
| ✓ | Tech / dev / software engineering | 4 distinct dev signals in the bio and post text: system design, concurrency, rag, embedding. | required |
| ✓ | Not a gaming channel | No gaming signal in the text. Substack publishes no content category, so this is a text judgement. | required |
| ✓ | Not a hardware / gear channel | No hardware/gear pattern. | preference |
| ! | Target region (US / UK / EU / AU / NZ / SG) | This account has left its location field empty. Region is unknown and must not be claimed. | required |
| – | Engagement rate | Substack publishes no view count, so a rate (engagement ÷ views) is not computable. Absolute counts are shown instead. | not published |
| – | Average is not one viral outlier | No view counts on this platform. | not published |
| – | Comment volume matches the view counts | Comment counts were not returned for this account. | not published |
| – | Reach plausible for the audience count | Substack did not return a free subscribers count. | not published |
| ✓ | Posted recently | Last post 4 day(s) ago. | preference |
| ✓ | Publishes on a regular schedule | Median 1 day(s) between posts; the 10 sampled posts span 14 days. | preference |
| – | Sampled posts are recent enough to compare | Too few dated posts with counts to test whether the sample is comparable. | not published |
| – | Same numbers from two endpoints of the same API | No post from this account appeared in both the search index and the profile feed, so there was nothing to cross-check. | not published |
| – | Verified against the platform's own published feed | Substack publishes no independent public feed to check the API's numbers against. YouTube is the only platform here where that second source exists. | not published |
| ✓ | An independent creator, not a company's own channel | Nothing marks this as a company-run channel: it is not a known company account, the name carries no corporate designation, and the bio is not written in a company's voice. | required |
| – | Same person confirmed on other platforms | No other public profile was linked from this account, so this record covers one platform only. | not published |
| – | Runs paid promotions (platform-declared) | Sponsorships shown for this creator are parsed from the text of their own post descriptions, so they are suspected rather than platform-confirmed. | not published |
Also on
| platform | handle | audience | views a post |
| X | @alexxubyte | 293K | 475K |