jm + cuckoo-hashing   2

MemC3: Compact and concurrent Memcache with dumber caching and smarter hashing
An improved hashing algorithm called optimistic cuckoo hashing, and a CLOCK-based eviction algorithm that works in tandem with it. They are evaluated in the context of Memcached, where combined they give up to a 30% memory usage reduction and up to a 3x improvement in queries per second as compared to the default Memcached implementation on read-heavy workloads with small objects (as is typified by Facebook workloads).
memcached  performance  key-value-stores  storage  databases  cuckoo-hashing  algorithms  concurrency  caching  cache-eviction  memory  throughput 
november 2016 by jm
"Cuckoo Filter: Practically Better Than Bloom"
'We propose a new data structure called the cuckoo filter that can replace Bloom filters for approximate set membership
tests. Cuckoo filters support adding and removing items dynamically while achieving even higher performance than
Bloom filters. For applications that store many items and target moderately low false positive rates, cuckoo filters have
lower space overhead than space-optimized Bloom filters. Our experimental results also show that cuckoo filters outperform previous data structures that extend Bloom filters to support deletions substantially in both time and space.'
algorithms  paper  bloom-filters  cuckoo-filters  cuckoo-hashing  data-structures  false-positives  big-data  probabilistic  hashing  set-membership  approximation 
march 2015 by jm

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