منابع مشابه
Scoped Locking 1 Scoped Locking
Example Commercial Web servers typically maintain a ‘hit count’ component that records how many times each URL is accessed by clients over a period of time. To reduce latency, a Web server process does not maintain the hit counts in a file on disk but rather in a memoryresident table. Moreover, to increase throughput, Web server processes are often multi-threaded [HS98]. Therefore, public metho...
متن کاملLocking Timestamps Versus Locking Objects
We present multiversion timestamp locking (MVTL), a new genre of multiversion concurrency control algorithms for serializable transactions. The key idea behind MVTL is simple and novel: lock individual time points instead of locking objects or versions. After showing what a generic MVTL algorithm looks like, we demonstrate MVTL’s expressiveness: we present several simple MVTL algorithms that ad...
متن کامل▶B-Tree Locking B-Tree Locking
B category, and a bubble attached to a node represents a set of archaeological records. The size of a bubble attached to a node reflects the number of records belonging to that category. The hyperbolic tree supports ‘‘focus + context’’ navigation; it also provides an overview of records organized in the archaeological digital library. It shows that the records are from seven archaeological site...
متن کاملFirst Metatarsophalangeal Joint Arthrodesis: A Retrospective Comparison of Crossed-screws, Locking and Non-Locking Plate Fixation with Lag Screw
Background:Locking plate fixation is increasingly used for first metatarsophalangeal joint (MTP-I) arthrodesis. Still there is few comparable clinical data regarding this procedure. Methods:We retrospectively evaluated 60 patients who received an arthrodesis of the MTP-I between January 2008 and June 2010. With 20 patients each we performed a locking plate fixation with lag screw, arthrodesis w...
متن کاملPhoton locking
Modulation of a cw laser by a traveling-wave acousto-optic modulator has recently been utilized to implement sequences of phase-coherent optical pulses.' By controlling the relative phases of the rf pulses applied to the crystal, one can control the phases of the light pulses that are created by the acoustic grating. That is, the phase of an rf pulse is effectively transferred to the correspond...
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ژورنال
عنوان ژورنال: Fundamenta Mathematicae
سال: 2018
ISSN: 0016-2736,1730-6329
DOI: 10.4064/fm330-5-2017