storage

I am building a site that is looking at Millions of photos being uploaded easily (with 3 thumbnails each for each image uploaded) and I need to find the best method for storing all these images. I've searched and found examples of images stored as hashes.... for example... If I upload, coolparty.jpg, my script would convert it to an Md5 hash resulting in.. dcehwd8y4fcf42wduasdha.jpg and that's stored in /dc/eh/wd/dcehwd8y4fcf42wduasdha.jpg but for the 3 thumbnails I don't know how to store them QUESTIONS.. Is this the correct way to store these images? How would I store thumbnails? In PHP what

I am looking for a reasonably well tested library+server to store a persistent distributed hash table. I am hesistant to use SQL-based solutions as the data is highly document oriented, consisting of millions of ~64KB blobs with only a single index (computed by hash of said BLOB) - and needs to be able to be distributed for long term scaling prospects. Due to expense and bandwidth considerations, external solutions such as S3 are not an option. Something like CouchDB or Project Voldemort would be ideal - however there is a noticable lack of .NET bindings for both (PV can be IKVMC'd from Java -

My app downloads some multi-media files from a server when it's installed. I do this to save space on the size of the app. However, the drawback of this approach is that when the app is uninstalled, it doesn't delete those files. I've seen reports that this is possible, but I can't seem to make it work. Is there a way to do this on uninstall, or should I just forget about it? Note that I have the app installed on the SD card by default as well, but I'm not sure if all phones will automatically support this. Could you download the files and write them to the apps internal space using the

I'm currently using OpenCV's ORB features extractor and I did notice the strange (at least for me) way the ORB-descriptor is stored (it is basically a BRIEF-32 with a modification that is not relevant to my question). As some of you know ORB takes the keypoints extracted using a modified FAST-9 (circle radius = 9 pixels; also stores orientation of the keypoint) and uses those with a modified BRIEF-32 descriptor to store the feature that the keypoint represents. BRIEF (ORB version) works as follows: we take a 31x31 pixels patch (represents a feature) and create a bunch of random 5x5 pixels test

I'm running performance tests against ATS and its behaving a bit weird when using multiple virtual machines against the same table / storage account. The entire pipeline is non blocking (await/async) and using TPL for concurrent and parallel execution. First of all its very strange that with this setup i'm only getting about 1200 insertions. This is running on a L VM box, that is 4 cores + 800mbps. I'm inserting 100.000 rows with unique PK and unique RK, that should leverage the ultimate distribution. Even more deterministic behavior is the following. When I run 1 VM i get about 1200

I am building a form in which i have to store the data in html5's sessionStorage i don't know where the sessionStorage expires. Can anyone tell me about the expiration time of the sessionStorage Peter Rasmussen It lives and dies with your browser session and is not shared between tabs. It doesn't expire automatically. So if you never close your browser it never expires. So when the tab/window is closed the data is lost. Each sessionstorage area is allowed 5mb of storage (in some browsers 10mb). Where as cookies only allow 4kb (or more in some browsers). Cookies however has a set expiration

I am doing a large migration from physical machines to ec2 instances. As of right now I have 3 x.large nodes each with 4 instance store drives (raid-0 1.6TB). After I set this this up I remembered that "The data on an instance store volume persists only during the life of the associated Amazon EC2 instance; if you stop or terminate an instance, any data on instance store volumes is lost." What do people usually do in this situation? I am worried that if one of the boxes crash then all of the data will be lost on that box if it is not 100% replicated on another. http://www.hulen.com/?p=326 I

I really enjoy database design and the whole concept of managing data semantically and all the logic that comes with it. My knowledge level when it comes to databases is however (I would guess) quite basic - I can model data relationships correctly with ER diagrams, connection tables, handling many-to-many, one-to-many etc etc. I'm experienced when it comes to programming in general, and I figure my database knowledge is like knowing the basics of object oriented programming, i.e how to model a car-class, inheriting from the vehicle class, containing wheel objects and so on. Now I would like