caching

问题 I have been trying to make functools.lru_cache instance specific as described in this answer, but their solution fails when used on the __call__ method. class test: def __init__(self): self.method = lru_cache()(self.method) self.__call__ = lru_cache()(self.__call__) def method(self, x): print('method', end=' ') return x def __call__(self, x): print('__call__', end=' ') return x b = test() # b.method is cached as expected print(b.method(1)) # method 1 print(b.method(1)) # 1 # __call__ is

问题 I want to cache data in an angular application, and avoid fetching data from the server too often. The data is displayed in a material design table (datasource). I have read some blogs that suggest using RxJS's publishReplay along with RefCount , or shareReplay , to implement caching. However, as far as I understand, this means that the cached data is stored in RAM. Is this a good strategy when there is a lot of data to be saved, or should I use something else like the browser's local storage

问题 I executed a linear search on an array containing all unique elements in range [1, 10000], sorted in increasing order with all search values i.e., from 1 to 10000 and plotted the runtime vs search value graph as follows: Upon closely analysing the zoomed in version of the plot as follows: I found that the runtime for some larger search values is smaller than the lower search values and vice versa My best guess for this phenomenon is that it is related to how data is processed by CPU using

问题 Hi I notice that I have large folders <1Gb from AndroidStudio on Libraries/Cache OSX 10.9 The folders are: AndroidStudio AndroidStudio1.3 AndroidStudioBeta AndroidStudioPreview1.3 AndroidStudioPreview1.4 I'm using AndroidStudio 1.4 beta 4 currently Can I safe delete some of these cache folders? Do you know what would be the proper manner to do it? 回答1: It's safe generally, The cache in /System/Library/Caches is useful for system but the cache in ~/Library/Caches are not that useful. Deleting

问题 I have a django base template and I added a few JS libraries, but every time I refresh the page no changes are shown. I have already tried deleting my browser's cache and history and all that. I'm not using django cache anywhere in my code, is it posible that a configuration in settings.py may be causing this behavior? (I've already checked that file and there's nothing related to cache...) I've already restarted django development server and tried, nothing to do there... Is there anything

问题 I am trying to use PAPI library to count cache misses. cache hit performance counter is not available on my hardware, that's why I am trying to determine cache hits with no cache misses. I am trying few things. First version of my code is this: int numEvents = 2; long long values[2]; int events[2] = {PAPI_L1_DCM, PAPI_L2_TCM}; if (PAPI_start_counters(events, numEvents) != PAPI_OK ) // !=PAPI_OK printf("PAPI error: %d\n", 1); for(int i=0; i < arr_size; i++) { array[i].value = 1; } _mm_mfence()

问题 It looks like broadcast method makes a distributed copy of RDD in my cluster. On the other hand execution of cache() method simply loads data in memory. But I do not understand how does cached RDD is distributed in the cluster. Could you please tell me in what cases should I use rdd.cache() and rdd.broadcast() methods? 回答1: Could you please tell me in what cases should I use rdd.cache() and rdd.broadcast() methods? RDDs are divided into partitions . These partitions themselves act as an

问题 It looks like broadcast method makes a distributed copy of RDD in my cluster. On the other hand execution of cache() method simply loads data in memory. But I do not understand how does cached RDD is distributed in the cluster. Could you please tell me in what cases should I use rdd.cache() and rdd.broadcast() methods? 回答1: Could you please tell me in what cases should I use rdd.cache() and rdd.broadcast() methods? RDDs are divided into partitions . These partitions themselves act as an

问题 We had a bug in our production system. The timeout was set incorrectly. Now I want to write a test which checks, that the value of the timeout is correct. I look at the docs and don't see a way to read the timeout value of a particular cache-key: https://docs.djangoproject.com/en/2.2/topics/cache/ How could I read the timeout value in my test to unsure it is correct? 来源： https://stackoverflow.com/questions/58764017/read-the-timeout-of-a-django-cache-entry

问题   i have a page with a TYPO3 plugin, that shows the "tip of the month". I populated items in the list module, having a start/end date to the respective month. The thing is I have to either disable the cache (or set it to only 1 day) or flush it manually, or the tip of the last month is still shown. I want the page to be cached, but the cache only be valid until the 1st of each month. Setting page lifetime in the background to "1 month", actually sets a lifetime of 2678400 seconds (31 days),