Tag
write-barriers
- Sep 16, 2026 Checkpointing and the Cost of a Consistent Snapshot Why capturing a consistent image of a mutating data structure requires either a pause or a write barrier, and how copy-on-write roots, double buffering, and fuzzy checkpoints differ in cost. memory systems
- Apr 14, 2026 Tri-Colour Marking and the Barriers That Keep It Honest Why a concurrent marker must prevent a black object from pointing at a white one, how insertion and deletion barriers each enforce that, and what the invariant costs per store. language runtimes
- Nov 14, 2025 Durability Barriers, Flushes, and What fsync Actually Waits For The storage-stack path a flush traverses, why a drive cache that ignores it voids every journal guarantee, and what a directory fsync must order. filesystems
- Sep 26, 2025 Fsync Cost and Journal Modes on Flash Storage What a flush request actually guarantees on a phone, how SQLite synchronous levels trade durability for write latency, and why the barrier between the journal and the database file is the one that matters. mobile computing
- Apr 9, 2024 Generational Collection and the Write Barrier That Enables It How the weak generational hypothesis justifies splitting the heap by age, why a young-only collection must be told about old-to-young pointers, and what each barrier flavour costs. language runtimes