I am implementing tbb\'s concurrent hash map to compare the performance of it against a suite of other concurrent hash tables.
I\'m working with a program that runs lengthy SQL queries and stores the processed results in a HashMap. Currently, to get around the slow execution time of each of the 20-200 queries, I am using a fi
I have a collection of objects that is modified by one thread and read by another (more specifically the EDT). I needed a solution that gave me fast look up and also fast indexing (by order inserted),
If the keys I wish to use are guaranteed to be unique (or at least the assumption can be made that the keys are unique), does using a \'vanilla\' ConcurrentHashMap provide the best performance, or doe
Currently I have Has开发者_如何转开发hMap implemented which private static Map<String, Item> cached = new HashMap<String, Item>();
Does the static ConcurrentHashmap need开发者_Python百科 to be externaly synchronized using synchronize block or locks?Yes and no. It depends on what you\'re doing. ConcurrentHashMap is thread safe for
We know that ConcurrentHashMap can provide concurrent access to multiple threads to boost performance , and inside this class, segments are synchronized up (am I right?). Question is, can this design
Is it possible to use putIfAbsent or any of its equivalents like a short circuit operator. myConcurrentMap.putIfAbsent(key,calculatedValue)
Current eviction algorithm for maps is quite lazy. It looks like expired objects are evicted only when the data structure is accessed.
I need a multi-threaded Map object to use in my web server\'s caching, and I need to have null keys. HashMap allows me to have null keys, but ConcurrentHashMap doesn\'t. I tried to create a synchroni
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