I have a big data.frame that I want to write into a compressed CSV file. Is there any way to directly write the data into a CSV.TAR.GZ compressed file instead of performing write.csv/gzip steps in ...

My understanding of an in-memory table is a table that will be created in memory and would resort to disk as little as possible, if at all. I am assuming that I have enough RAM to fit the table the...

Say i have the two buffers: const bufferFile1 = Buffer.from('Hello World!', 'utf-8') const bufferFile2 = Buffer.from('Hello Again World!', 'utf-8') How can i create tarball file buffer/stream/blob...

Is there a way in python to get the path to the in-memory file, so it'll behave as a normal file for methods which needs file path? My objective is to protect the file, so avoiding dumping into /t...

I'm using Rails 5.1. I have application-wide memory_store caching happening with Rails. This is set up in my config/environments/development.rb file £ Enable/disable caching. By default caching i...

I was wondering if it is possible to 'stream' data using the OpenCV VideoWriter class in Python? Normally for handling data in memory that would otherwise go to disk I use BytesIO (or StringIO). ...

I do not want to get a detailed comparison. Neither do I want to define 'what is the best or fastest' in-memory DB. They are both similar, so I want to get an overview of critical differences. So w...

How can I save/load full embedded h2 in-memory database to some file or directory in binary mode for faster loading. I want to use this for caching data so I don't have to run all the lines of cre...

I need to be able to search over a collection of approx 2 million items in C#. Search should be possible over multiple fields. Simple string-matching is good enough. Using an external dependency l...

Is there an appender for log4j that only stores a list of the logging events (to be used in unit tests, to verify no error logs were written) ?

I have installed HazelCast 2.5. I want to persist my records into disk. I learned that MapStore does this job. However i'm not sure how to implement MapStore. Code I've written so far: public cla...

I made a database through sqlite in c++. The db has been created in memory (using the ":memory:" parameter insted of a filename), in order to have a very quick behavior. The database is created ...

I am trying to run some Hibernate/JPA examples using an in-memory HSQL DB. The error message I get is the following: 13:54:21,427 ERROR SchemaExport:425 - HHH000389: Unsuccessful: alter table Refe...

I'd like to write some integration tests using www.eventstore.org to test that I am able to serialize some domain events and append them to a stream, and retrieve them and deserialize them, etc. I...

How can I create an in-memory table in PostgreSQL?

I need a completely in-memory object that I can give to BufReader and BufWriter. Something like Python's StringIO. I want to write to and read from such an object using methods ordinarily used with...

I have an instance of org.apache.spark.rdd.RDD[MyClass]. How can I programmatically check if the instance is persist\inmemory?

I was wondering if there is a in-memory OLAP server which can handle MDX. I found the Wikipedia article. But it says nothing about in-memory functionality... The only one I know of them is ...

I have created a excel file using jxl library. The code is working fine but the only problem is that each time for building an excel file from the dynamic values coming from a service, the excel co...

I've been reading, browsing, searching a lot on this, I've criss-crossed stackoverflow back and forth many times and I managed to narrow my problem as much as I could. The only thing I do not und...

I need to do a lot of things with resources on the fly: parsing xsd/xml docs, building and compiling java classes, package them into jars ans wars, persist in DB, deploy them as OSGi, etc. Most of...

I guess there is not built-in way to achieve that: I have some cached data, that need to be always up to date (interval of few 10s of minutes). Its generation takes around 1-2 minutes, therefore i...

I am writing a unit test, and one of them is returning a zip file and I want to check the content of this zip file, grab some values from it, and pass the values to the next tests. I'm using Rack ...

I'm using Rails 5. I'm currenlty using Rails in-memory cache to cache db query results, for instance, this is in my state.rb model ... def self.cached_find_by_iso_and_country_id(iso, country_id) ...

Is there any library for distributed in-memory cache, distributed tasks, publish/subscribe messaging? I have used Hazelcast in Java, I would like something similar. I know that Memcached is ...