storage

I have a requirement to store user uploaded files to the database (filesystem is not an option). The files that are uploaded are different types (e.g. PDF, EXCEL, etc). I have a problem on deciding whether or not to use MEDIUMBLOB as type to store these files as binary data. And the confusion arises due to the fact that the size of these files vary with huge difference. Like some of the files are a few hundred KiloBytes (e.g. 114 KB) but some others are upto 1.5 MegaBytes. So I really need to use MEDIUMBLOB as the column type. But I have little confusion as the actually memory taken up depends

I simply cannot find how to get one specified file from the external storage. I know that with getExternalStoragePublicDirectory(), you get the external storage directory but I can't get further. I need some kind of method where you have to give the name of the file and it returns the file. Thanx Better than using File.separator is this, which is standard Java: final File file = new File(Environment.getExternalStorageDirectory() .getAbsolutePath(), filename); You can just do this: File f = new File(Environment.getExternalStorageDirectory() .getAbsolutePath() + File.separator + fileName);

While searching trough SO, I've found two contradicting answers (and even a comment that stated that) but no definitive answer: The problem is: is there any performance benefit, if you store a TEXT/BLOB field outside of a table? We assume: You SELECT correctly (only selection the TEXT/BLOB if required, no SELECT *) Tables are indexed properly, where it makes sense (so it's not a matter of 'if you index it') The database design doesnt really matter. This is a question to identify the MySQL behaviour in this special case, not to solve certain database design problems. Let's assume this Database

Where does the latest Google Chrome for Mac save cookies, specifically those that expire with the session? The cookies are in a sqlite3 database named ~/Library/Application Support/Google/Chrome/Default/Cookies . The session cookies are not stored on the disk. The file is a SQL database you can see and change the contents with SQLite Database Browser witch can be easily found for download in the internet. Even though this was posted 6 years ago, maybe this could still be helpful: did you mean to ask where can you find the cookies and localstorage and resources on chrome's devTools on mac os?

I'm going to store records in a single table with 2 fields: id -> 4 characters password_hash -> 64 characters How many records like the one above will I be able to store in a 5mb PostgreSQL on Heroku? P.S.: given a single table with x columns and a length of y - how can I calculate the space it will take in a database? Erwin Brandstetter Disk space occupied Calculating the space on disk is not trivial. You have to take into account: The overhead per table (small, basically the entries in the system catalog, may not affect you on Heroku). The overhead per row (HeapTupleHeader) and per data page

i'm trying to find the best solution to create scalable storage for big files. File size can vary from 1-2 megabytes and up to 500-600 gigabytes. I have found some information about Hadoop and it's HDFS, but it looks a little bit complicated, because i don't need any Map/Reduce jobs and many other features. Now i'm thinking to use MongoDB and it's GridFS as file storage solution. And now the questions: What will happen with gridfs when i try to write few files concurrently. Will there be any lock for read/write operations? (I will use it only as file storage) Will files from gridfs be cached