Inter-process and inter-thread data sharing [closed]
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Am I sending large amounts of data sensibly?
I am about to design a video conversion service, that is scalable on the conversion side.
Are there examples of non CRUD approaches?
I’m a programmer but also have worked as an archivist. As archivist it’s a lot about keeping data.
Design patterns to avoiding breaking the SRP while performing heavy data logging
A class that performs both computations and data logging* seems to have at least two responsibilities. Given a system for which the specifications require heavy data logging, what kind of design patterns or architectural patterns can be used to avoid bloating all the classes with logging calls every time they compute something?
Pattern for mobile app data synchronisation using HTTP over 3G networks
I have a mobile app built using jquerymobile, PhoneGap and some custom CSS and JavaScript. The data objects are received in JSON and used to display different forms to the user. For example
Referential integrity in a database where tuples are not physically deleted
Many modern Relational Database Management Systems automatically support referential integrity, i.e. when you try to delete a tuple which has a reference (in the form of foreign key, for example), the DBMS doesn’t complete the operation and brings an error.
How best to merge/sort/page through tons of JSON arrays?
Here’s the scenario: Say you have millions of JSON documents stored as text files. Each JSON document is an array of “activity” objects, each of which contain a “created_datetime” attribute. What is the best way to merge/sort/filter/page through these activities via a web UI? For example, say we want to take a few thousand of the documents, merge them into a gigantic array, sort the array by the “created_datetime” attribute descending and then page through it 10 activities at a time.
Terminology: Really Delete vs set IsDeleted (“soft delete”) flag
I have a site where a regular user can delete records, where what happens is that an IsDeleted flag gets set. On administrative pages, a privileged user can delete records where an actual SQL DELETE permanently discards such records. The difference is important for obvious reasons, and I want to use a consistent term to refer to the one form of deletion vs. the other. I’ve been playing with the words Remove, Delete, Discard and possibly Recycle, and Archive.
How to organize integration tests and test data for different environments when using Maven Failsafe
I have started to separate my unit tests from my integration tests by using Maven Surefire and Failsafe.
Multiple Display of a Document and persist each viewer change in a single document
i have a scenario where i have to make available a document for viewing and editing to multiple users, the users can edit and view the document at the same time. Now the problem arises here if for example user A and user B are viewing a document at the same time and if both the user change the state of the document and user A saves it at x instant of time and user B saves it at y instant of time where y>z in the time dimension. The changes by the user A will be overridden by changes made by the user B.