How DisCoGC Cuts Storage Costs by 20%: A Deep Dive into ByteStore’s New GC Paradigm

This article analyzes the DisCoGC algorithm introduced by ByteDance, explaining how its discard‑centric garbage collection eliminates the write‑amplification vs. space‑amplification trade‑off in log‑structured storage, details the engineering challenges of multi‑layer deployment, and presents production results showing up to 20% TCO reduction without impacting latency.

Cost reductionGarbage Collectioncompaction

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How DisCoGC Cuts Storage Costs by 20%: A Deep Dive into ByteStore’s New GC Paradigm

OPPO Kernel Craftsman

Jan 22, 2020 · Fundamentals

Understanding the Flash‑Friendly File System (F2FS): Design, Implementation, and Future Directions

F2FS is a log‑structured, flash‑aware file system that transforms random writes into sequential ones, uses segment‑based layout, NAT indexing, and hot‑cold data segregation with sophisticated garbage‑collection to improve SSD performance, and is now deployed in Android devices with ongoing enhancements such as online resizing and cold‑data compression.

F2FSGarbage CollectionStorage Management

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Understanding the Flash‑Friendly File System (F2FS): Design, Implementation, and Future Directions