python - sqlite3 database in shared memory

Question

I'm trying to share an in-memory database between processes. I'm using Python's sqlite3. The idea is to create a file in /run/shm and use it as a database. Questions are:

1. Is that safe? In particular: do read/write locks (fcntl) work the same in shm?
2. Is that a good idea in the first place? I'd like to keep things simple and not have to create a separate database process.

Answer 1

我已经用 shm 文件测试了 fcntl（在 Python 中），似乎锁定工作正常。实际上，从进程的角度来看，它是一个文件，操作系统可以正确处理所有内容。

我将保留这种架构，因为它足够简单，而且我没有看到任何（主要）缺点。