flashield · research

Flashield

Flashield is a hybrid DRAM-and-SSD key-value cache that filters flash admission using predicted reads and updates.

Incoming objects enter DRAM; selected objects move to flash in segments. Admission and eviction use different rankings. [1]

A Flashield ghost may still serve its current value before segment reclamation. This is not nonresident ARC history. [1]

Its trace comparison is simulation; hardware microbenchmarks are separate. [1]

Relations

related

Cache admission, First-in first-out cache replacement, Ghost cache entry, Write amplification

Citations

1. Eisenman et al. Flashield. NSDI 2019, pp. 65-78; sections 3, 4.3 and 5. (accessed 2026-11-10)

Further reading

2. Hesela: cache admission and matched write counters (accessed 2026-11-10)

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