Questions regarding cache algorithms by applications and implementations of information caching by database engines and other information repository and presentation applications.

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95 views

What to call objects that may delete cached data to meet memory constraints?

I'm developing some cross-platform software which is intended to run on mobile devices. Both iOS and Android provide low memory warnings. I plan to make a wrapper class that will free cached resources ...
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0answers
68 views

Built-in Context-and-Input-to-Output-Hashing in Compilers

Why doesn't (open source) compilers contain builtin funtionality for (shared) caching and reuse-fetching (using SHA1-hash of compiler-version, build-flags, target-platform and inputs) of executable ...
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1answer
225 views

Is using dynamically generated code as cache a good idea?

I have a web search interface that can compare products in a table. This data set changes a few times a week. I have been storing a "DISTINCT" list (used for parametric selection) in a cache table. ...
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1answer
122 views

Why are the test values the same for FIFO and LRU? [closed]

I had a computer science assignment where we compared FIFO, LRU and random policy for a cache memory. FIFO and LRU were equally good as improvements to a random policy. Why? Is it just a coincidence? ...
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2answers
443 views

Intel Nehalem/SB/IB/Haswell CPUs, cache vs TLB

On the Nehalem+ architecture Intel CPUs what is the interaction between the L1 cache, L2 cache, L1 DTLB and L2 DTLB? On all the images I have found there isnt a clear explanation whether the CPU looks ...
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1answer
84 views

Python - Cache function and decorator

I am playing with cache functions using decorators. First, I use a generic function def memorize(func): cache = {} print "printing cache" print cache print "cache printed" ...
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1answer
94 views

Can I use a timestamp parameter for cache invalidation?

I am considering a scheme for passing a timestamp value in a cached response, and then sending it back to the service to perform cache invalidation. I'm wondering if that's a valid approach. Is that a ...
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1answer
354 views

Improving performance with caching of files in C# [closed]

EDIT: You were right, the problem is not checking if a file with the same name exists but the connection. I made a mistake measuring the time with StopWatch and included a part which used the network ...
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1answer
70 views

Redis for caching

I've heard a lot of positive about Redis but have not used it myself. Now I want to add a cache layer for my web app to reduce the DB load, and I suppose Redis is fine for this. But I don't clearly ...
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2answers
389 views

Pattern for caching DAOs: strategy or decorator?

I'm building a php system with the Services/DAOs/Domain Models pattern, and now is the time to implement a caching system for the DAOs. Would you use a decorator pattern, or maybe the strategy ...
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1answer
199 views

design for buffering or queuing data streams to replace database

We have a system (ms stack, .net, sql) that receives data from thousands of remote devices (several independent readings/min). We currently save all the data to a db as it arrives and a second service ...
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1answer
53 views

Storing and presenting custom table data

I have a web site upon which I want to provide users the ability to create tables of data. These tables will come from a predefined list of table definitions of which I will be adding to myself. This ...
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1answer
273 views

Are there any concerns with using a static read-only unit of work so that it behaves like a cache?

Related question: How do I cache data that rarely changes? I'm making an ASP.NET MVC4 application. On every request the security details about the user will need to be checked with the ...
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2answers
1k views

Idea to develop a caching server between IIS and SQL Server

I work on a few high traffic websites that all share the same database and that are all heavily database driven. Our SQL server is max-ed out and, although we have already implemented many changes ...
0
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2answers
982 views

Syncing objects to a remote server, and caching on local storage

What's the best method of sycing objects (as JSON) to a remote server, with local caching? I have some objects that will pretty much just be plain-text with some extra meta-data. I was thinking of ...
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1answer
927 views

Caching Business Objects in MVC application

I figured this was more of an architectural question, so I chose to post it here rather than Stack Overflow. So I'm building an MVC web application and have just finished writing the code that wraps ...
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1answer
96 views

Optimizing and caching frequently accessed but rarely updated Tables

My app has some tables that will be rarely updated, probably just once in the beginning and at the system setup. Despite that, they will be frequently accessed. Almost every operation depends on ...
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3answers
462 views

Best practices for caching search queries

I am trying to improve performance of my ASP.net Web Api by adding a data cache but I am not sure how exactly to go about it as it seems to be more complex than most caching scenarios. An example is I ...
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1answer
78 views

Mail Server Caching

I'm currently working on a web mail client. When a user logs in, I'm fetching all the mails from the INBOX from the beginning of time. As expected this is pretty darn slow. I'm planning to implement ...
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1answer
166 views

Running entire frontend of a system on a flatfile cache

I'm in the middle of moving away from PyroCMS to a custom solution built on Laravel. Wont go into the details as to why here, but it is a necessity. I'm toying with the idea of caching things like ...
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2answers
778 views

How to store cache?

The data in my website is stored in many different tables(friends,relatives,etc) and every-time I have to query each and every table. But all this data is subject centric. E.g. data for a person is of ...
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0answers
65 views

What is the design pattern name for a class that handles 2nd level caching? [duplicate]

I have a system where I want to start introducing some 2nd level caching. I want to abstract data access a bit and allow some type of other class to do the dirty work of fetching a DTO; it will check ...
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0answers
31 views

Cache Memory Vs Main Memory [duplicate]

Why is the access time of the cache memory lesser than the access time of the main memory? I have tried looking at the sites as - tutorialspoint.com, education-portal.com etc. I know that the ...
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0answers
1k views

Understand how the TLB (Translation Lookaside buffer) works and interacts with pagetable and addresses

So I am trying to understand this TLB (Translation Lookaside Buffer). But I am having a hard time grasping it. in context of having two streams of addresses, tlb and pagetable. I don't understand ...
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3answers
487 views

How do I handle 3rd party search result data (via cache)

I have a search function on my site and it is taking data from 6 different 3rd party resources. The problem is, it takes too long requesting the data over and over again on the results page. I've ...
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3answers
223 views

Forcing Cache Refresh

I'm updating an existing tomcat web application to read certain resources from a REST API. Currently the application reads them from flat files. Since the application is very critical, I added a ...