storage

Best way to store data between program runs in java?

廉价感情. 提交于 2019-11-27 02:53:35
问题 What is the best way to store data between program runs in Java? I already know that you can use a text file and store the information that way, but I was wondering if there is a better way to store the information that is generated by the program between runs of the program. Also, is there any way to do it so as to keep the information secure? Specifically, I want to keep the end user from being able to access it. 回答1: I was wondering if there was any way other placing the information that

Secure PHP File Upload Script

假装没事ソ 提交于 2019-11-27 01:42:03
问题 I have asked this question twice i think, but this is the first time i have gotten close to this. I am planning on allowing users to upload and download their files (.pdf, .doc, .exl, .ppt, .png, .jpg, .gif). Will these tips be suffice: http://blogs.sans.org/appsecstreetfighter/2009/12/28/8-basic-rules-to-implement-secure-file-uploads/ Also, is there a script I can utilize, i am new to php. 回答1: a late response, but i think your script should be based on this: http://blog.insicdesigns.com

How to limit Docker filesystem space available to container(s)

二次信任 提交于 2019-11-27 01:40:56
问题 The general scenario is that we have a cluster of servers and we want to set up virtual clusters on top of that using Docker. For that we have created Dockerfiles for different services (Hadoop, Spark etc.). Regarding the Hadoop HDFS service however, we have the situation that the disk space available to the docker containers equals to the disk space available to the server. We want to limit the available disk space on a per-container basis so that we can dynamically spawn an additional

How to store persistent data client side

爷,独闯天下 提交于 2019-11-27 01:40:41
问题 I need to programmatically store data on the client side without having to transfer the data from the server on every page load. I considered generating a dynamic JavaScript file with the needed data for the current session of the user and make sure it is cached, but that seems really messy and there are a few drawbacks I can think of to such an approach. How can I go about storing persistent data on the client side? 回答1: You may store data in window.name , which can hold up to 2MB of data (!

Storing Images : DB or File System -

喜夏-厌秋 提交于 2019-11-27 01:37:05
I read some post in this regard but I still don't understand what's the best solution in my case. I'm start writing a new webApp and the backend is going to provide about 1-10 million images . (average size 200-500kB for a single image) My site will provide content and images to 100-1000 users at the same time. I'd like also to keep Provider costs as low as possible (but this is a secondary requirement). I'm thinking that File System space is less expensive if compared to the cost of DB size. Personally I like the idea of having all my images in the DB but any suggestion will be really

How to get an External storage sd card size (With Mounted SD card)?

回眸只為那壹抹淺笑 提交于 2019-11-26 22:52:39
问题 Link :I worked on based on this Link I added this line to find the size (both Internal and External) size, return availableExternalMemorySize/(1024*1024); I tested in my Tablet. I am getting both Internal and External SD card size as, In Internal Storage: Total Memory --1007 Available Memory --683 In External Storage: Total Memory -- 1763 Available Memory -- 1554 But in Tablet, I saw settings. An External Storage size has 8GB. But it is showing me 1.7 GB around when I tested via

Do .bss section zero initialized variables occupy space in elf file?

守給你的承諾、 提交于 2019-11-26 22:32:54
问题 If I understand correctly, the .bss section in ELF files is used to allocate space for zero-initialized variables. Our tool chain produces ELF files, hence my question: does the .bss section actually have to contain all those zeroes? It seems such an awful waste of spaces that when, say, I allocate a global ten megabyte array, it results in ten megabytes of zeroes in the ELF file. What am I seeing wrong here? 回答1: Has been some time since i worked with ELF. But i think i still remember this

is there a maximum size to android internal storage allocated for an app?

爱⌒轻易说出口 提交于 2019-11-26 22:22:06
问题 I want to save a json file with all the application data (something similar to preference) but im not sure what is the limit size, because if the app cant use this file it will not function probably. is this information known beforehand and the OS reserve some space for your app or its based on the size available. Update: I dont really care about External storage since is not always available in the device and could be changed (SD card) and i could check for internal storage using this but

Accessing functions bound to event handlers with jQuery

浪尽此生 提交于 2019-11-26 21:43:00
With jQuery you can bind functions to an event triggered on a DOM object using .bind() or one of the event handler helper functions. jQuery have to store this internally somehow and I wonder if is it possible given a DOM object, to find out which events have been bound to the object, and access those functions etc. The desired return result could look something like this: { click: [function1, function2], change: [function3], blur: [function4, function5, function6] } PatrikAkerstrand Edit : the method below works only in jQuery < 1.7 You can find a lot of interesting tips and tricks in this

storing uploaded photos and documents - filesystem vs database blob

南楼画角 提交于 2019-11-26 21:17:04
问题 My specific situation Property management web site where users can upload photos and lease documents. For every apartment unit, there might be 4 photos, so there won't be an overwhelming number of photo in the system. For photos, there will be thumbnails of each. My question My #1 priority is performance. For the end user, I want to load pages and show the image as fast as possible. Should I store the images inside the database, or file system, or doesn't matter? Do I need to be caching