Tag: mentoring

Full-Text Search Without Elasticsearch: BM25 in Pure TypeScript

How we replaced Elasticsearch with a 500-line TypeScript implementation of BM25s for mentor and session search in Mentoring. 4.6 million tokens per second indexing, zero infrastructure dependencies.

Our Mentoring Platform Was Bleeding $17 Per Overrun Session. Then I Built a Timer That Kills Zoom Calls.

How I built an in-memory billing engine that broadcasts millisecond-accurate charges via Server-Sent Events, escalates balance warnings, and automatically terminates Zoom meetings when credits run out.