• notes about tokio
• notes about sqlite
• notes about influxdb
• notes about observability
• Probabilistic Counting: The Bit-Level Internals of HyperLogLog
• Deep Dive: High-Performance Metrics Collection with eBPF Ring Buffers
• Prometheus Remote-Write on the Wire: Snappy Block + Protobuf Varints (and Why Your Ingest Costs Money)
• OTLP Exponential Histograms on the Wire: Bucket Index Math, Packed Varints, and Why Your Collector CPU Spikes
• W3C Trace Context on the Wire: traceparent’s 16-byte TraceID, Sampling Bits, and Zero-Allocation Parsing in Rust
• Bit-Level Anatomy of TSDB Compression: Gorilla vs Custom SIMD
• openclaw