A cache is a component that transparently stores data so that future requests for that data can be served faster.
4
votes
2answers
231 views
Creating a cache manager
I am purely new to C++ memory management. Am I on the right path, or should I employ a different design strategy or a different memory manager policy (such as ...
2
votes
1answer
53 views
1
vote
1answer
41 views
Using Redis to store word occurences
I am doing a project where I am analyzing a group of Tweets.
What I need to do is find the occurrence of each individual word. I am fairly new to Redis, so I am not quite sure that my solution is ...
4
votes
1answer
77 views
Using the Rotten Tomatoes API
This is a Python module I made to search the Rotten Tomatoes movie API. It caches the search results in a SQLite database.
What improvements can I make to the cache system? Is there a better way ...
4
votes
2answers
127 views
ASP.NET MVC architecture questions
I haven't done much .NET development in several years. Now I'm enjoying some of the new stuff with modern .NET. I just want to make sure I'm using things correctly. I'm a solo developer with no one ...
1
vote
1answer
206 views
Generic, thread-safe MemoryCache manager for C#
Using this question as a base, and using some of the advice in the answers, I wanted to build out something that would be generic, thread-safe, and easy to use for at least one current and several ...
2
votes
2answers
59 views
JavaScript bookmarklet with a 24 hour cache
I'm working on a bookmarklet that will be cached for 24 hours only, after that time it will be reloaded from the original source.
Is there something I could improve?
...
5
votes
1answer
66 views
HTTPCache and MemoryCache cross dependency
After asking a question on StackOverflow about the two .NET caching systems taking dependencies on each other I gave implementing them a go. I posted them as my own answer there but before accepting ...
15
votes
7answers
1k views
Why does caching of string objects perform faster?
I'm trying to implement String-Pool. I'm maintaining a HashMap<String,String> to store the keys.
...
2
votes
1answer
63 views
LRU Cache with a static variable for garbage value
I have tried to implement a Least Recently Used cache with only C++ STL containers. The main thing that I keep asking my self the static variable called ...
9
votes
1answer
176 views
Allowing user space file-system to (kind-of) keep more than maximum number of files open
The linked code below is meant to be used in a user space file-system (fuse). Given that multiple processes may have multiple files opened on the file-system, the files on the specific user space ...
3
votes
2answers
252 views
Generic MemoryCache class
I want to have a caching class to cache different types. I want each type to be cached in a different MemoryCache but in a generic way.
Am I doing it right?
...
1
vote
1answer
131 views
Performance issue of LFU-like web caching replacement algorithm
I have implemented a simulation program that runs LRU and another web caching algorithm called Sliding Window LFU. I want to compare them both in terms of the hit rate and their run time. SW-LFU works ...
1
vote
1answer
25 views
Loading Recent Posts In Session? [closed]
I have a PHP code structure where I cash some pages in sessions.
Example:
I have a page which shows last 10 user posts, what I do is to load 10 posts and store then in session:
Page Class:
...
3
votes
2answers
165 views
In-memory cache implementation revisited
As a follow-up on my earlier question, here is the new implementation. The major change is now that the base class just deals in ICacheValue values which are ...
3
votes
1answer
74 views
htaccess for URL remapping, caching, and compression
I have been collecting snippets from all over the place and then put them all together creating the following .htaccess file.
I really don't understand if what I have done below is good/should work ...
0
votes
0answers
38 views
Adding viewstate based property and implication in future converstion to mvc in asp.net forms project
Suppostedly adding another viewstate based property in user control (riddled with similar properties) incur technical debt in future effort to convert projects to MVC (comment made by one of my ...
8
votes
1answer
186 views
Cache wrapper - Generics vs Dynamic
I've implemented a common wrapper pattern I've seen for the .NET cache class using generics as follows:
...
5
votes
3answers
115 views
Class with a temporary buffer: Tradeoff between memory usage and execution speed
Consider the following two classes
class foo{
// huge data structure - 400-500 bytes per instance
};
class Bar{
void get_foo(int n, foo& f);
}
In my ...
7
votes
1answer
2k views
In-memory cache implementation
A few years ago I required a lightweight in-app-in-memory cache. Requirements:
Time complexity O(1) for individual element read/write access
Space complexity ...
4
votes
1answer
158 views
Function to delete oldest items out of HTML5 localStorage. Can I make it more efficient?
In a current javascript project, I'm working with the browsers localStorage, and it will pretty consistently be full. To overcome this, I wrote a wrapper to surround the localStorage object that would ...
5
votes
1answer
78 views
Optimize text to ascii lookup map and scalability
Is there a more optimal way of retrieving the character for the letter? I would assume that I would just replace my Entry set loop with another map, but I do not want to bloat the code, because it ...
4
votes
1answer
99 views
Caching a function view for a day
I am writing a flask app that I will deploy it on Heroku to test it. There is a page that will generate daily photos and information based on a JSON file. The view is valid for 24 hours beginning from ...
4
votes
1answer
185 views
In-memory data cache architecture for data transfer
I am writing a cron job to manipulate and transfer remote data.
I need to cache data from a table, process it, merge with previous table, iterate the process, and eventually send the result data to ...
3
votes
1answer
110 views
How to improve this session cache to search faster
I have this code which will store user session credentials:
...
5
votes
1answer
397 views
A Simple Cache class
“There are only two hard things in Computer Science: cache
invalidation and naming things.” -- Phil Karlton
That being said, I created this SimpleCache class which I intend to use to cache ...
1
vote
0answers
87 views
In-memory data cache architecture
I am designing basic in-memory cache storage with thin CRUD (actually CRD) interface. The design is inspired by the Backend solutions such as Parse and StackMob.
Main requirements:
Cache consists ...
5
votes
1answer
208 views
Generic pure functions memoization
I like to create tools for memoization since it can sometimes be useful. I recently created a generic tool for memoizing pure functions results. Here is an example og how it works:
...
6
votes
1answer
107 views
Optimize RecursionArray interface
I created a class a while ago that I named a "Recursion Array". It is a way to create dynamically memoized sequences such as the Fibonacci sequence or the factorial numbers sequences. The concept is ...
1
vote
0answers
127 views
Improve the architecture to cache data
I cache the data and use local database in my Windows Phone app. Algorithm is very simple:
Get data from DB and show in UI
Get data from a web service and show in UI
Update data in DB from the web ...
2
votes
1answer
2k views
Design LRU cache interview questions
Code reviewers, I request you review the code and suggest all tips for improvement.
...
3
votes
1answer
504 views
Locking during cache population
Here I want to lock when populating a particular cache object, without blocking other calls to the same method requesting Foos for other ...
1
vote
0answers
151 views
Combine and minimize all .js files in parent folder
I'd appreciate some feedback on my latest PHP script. It is supposed to work like this:
When obtained, it checks whether the cache is still up-to-date
IF YES, return the cache; IF NOT, reset the ...
3
votes
2answers
141 views
Perl script for generating iTunes xml Metadata for MP3 CDs/DVDs
Many years ago, I wrote a script in Perl that was meant to create a cached metadata of MP3 files (in Apple's plist/XML format) which iTunes uses when you insert a CD/DVD full of MP3 files (the same ...
1
vote
0answers
99 views
Memcached caching
I wanted to create a class to cache dynamic PHP output (or a portion of it from one page) using Memcached key/value story. Basically it checks to see if the file has been cached already, if it has, it ...
1
vote
1answer
102 views
Cache mechanism with duration
I want to implement in my code a cache mechanism with a fixed duration. For example an iframe will be cached for one hour, or a script file will be cached for 24 hours.
This is how I implemented it, ...
2
votes
1answer
380 views
How to create a simple stateless cache class in PHP
i need to create a cache class to avoid making the same calculations more than needed. My idea was something really basic like
...
4
votes
1answer
427 views
Implementing cache for server. Any suggestions?
I've just implemented a cache for my server, and I'd like your thoughts about performance improvements and maybe some possible bug fixes:
...
1
vote
1answer
160 views
Simple cache mechanism?
In my system I frequently require data by Ajax requests. For example, different lists, content of modal dialogs, etc. This data can't be changed after request, so I wrote cache mechanism which stores ...
3
votes
1answer
405 views
Java thread safety and caching techniques
This is my first Java multi-threading code. It is part of an Android application that is a client to a webpage that serves books. Each page of the book is in a separate PDF, and the Book class ...
2
votes
1answer
136 views
Sprite cache for SFML sprites
I'm trying to make a sprite cache for SFML sprites. The basic idea I got was to use a map of an enum and a sprite pointer. Then when I would ask for a certain ...
4
votes
1answer
56 views
2
votes
1answer
1k views
Currency conversion class with caching
I've just made this class, which supports caching. I'd really appreciate any comments on how to make it better etc.
Code
...
0
votes
1answer
73 views
What is the better way to retrieve value from this cache implementaion?
I have the following methods in CacheUtil class
...
1
vote
1answer
108 views
Wraper for caching methods in ASP .Net?
I have written a caching wrapper method for some of my services. The actual wrapper method is written as follows:
...
6
votes
1answer
392 views
Ability to forget the memoized supplier value
Guava has a feature request which is asking to provide the ability to forget memoized value on a given supplier.
On top on that I needed another functionality where if during the calculation of ...
10
votes
1answer
504 views
Improve Parallel Cache with Reactive Extensions & Unity Interception
The requirement is to be able to cache method invocations made on a boundary layer (Services layer). I'm using Unity to inject the concrete implementation of the Service layer classes. The ...
5
votes
2answers
270 views
Using different instances of an object to lock threads
I'd like to use lock objects that are specific to the person I'm updating. In other words, if thread A is updating Person 1, thread B is blocked from also updating Person 1, but thread C is not ...
1
vote
1answer
5k views
How to correctly use lock when adding/renewing cached data in asp.net cache?
This is sort of a follow up question on http://stackoverflow.com/questions/754661/httpruntime-cache-best-practices/11431198 where a reply from frankadelic contains this quote and code sample from ...
3
votes
1answer
669 views
caching in WCF web service
I want to realize caching in WCF web service. I'm using the following code:
...
