data bridge between Java and Python daemons [closed]

Question

Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers.

---

Want to improve this question? Update the question so it's on-topic for Stack Overflow.

Closed 7 years ago.

Improve this question

I have two background processes running on linux machine. One is Java and second one is in Python. What would be most efficient way to exchange data between these two apps ? I am talking about text / images data below < 10Mb approx each 5 minutes (not streamed). Due high cost of refactoring we cannot migrate fully to Python (or Java).

Natural choice is filesystem or local networking but what about in memory database (sqllite/redis/...) ? Filesystem handling or network handling is sometimes painfull i guess.

Do you think that in-memory-DB would be good option for such task ? Jython is not option there as not all Python libraries are compatible...

Environment : ubuntu server 12.04 64bit, Python 2.7, Java 7

Answer 1

An efficient way to transfer the data would be a local TCP connection and stream the data with a common protocol. Protocol buffers is one way to define your protocol across language platforms. An in memory database would add a whole new component and unnecessary complexity to your system.

Answer 2

Unix domain sockets would be the fastest since it won't use the disk and it doesn't have unnecessary overhead like TCP.

Answer 3

Given the relatively low volume of data you need, I would say the easiest way would be to use a TCP socket to communicate between the two processes. The data speed on the loopback interface is more than enough for your needs.