This article examines how adaptive structural encoding in columnar formats like Lance dramatically improves random‑access performance on NVMe storage, compares it with Apache Parquet and Arrow, and discusses the trade‑offs between scan speed, memory usage, and compression.
This article presents a series of C‑based experiments that measure how sequential and random memory accesses behave across different array sizes and strides, revealing that random accesses can be up to four times slower than sequential ones due to cache and memory I/O effects.
This article explains what arrays are, how they enable O(1) random access through address calculation, the time‑complexities of insertion and deletion operations, techniques for improving array efficiency, and why zero‑based indexing is used, comparing arrays with dynamic containers like ArrayList.
The article outlines the MP4‑based M4A container’s hierarchical box format, details the Sample Table (stbl) and its essential sub‑boxes (stts, stsc, stco/co64, stsz) that map playback time to file offsets, explains time‑scale conversion, optional boxes, and provides pseudo‑code and parsing tips for precise random‑access seeking.
