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18-Feb-2020 18:57
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Python provides inbuilt functions for creating, writing and reading files.
There are two types of files that can be handled in python, normal text files and binary files (written in binary language,0s and 1s).
Maildirs use a naming scheme with additional subdirectories to perform update operations in a reliable and lock-free way.
The md and gocept.filestore libraries provide convenient wrappers for maildir operations.
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The ACID properties of the classic transaction model will serve as guidelines to improve reliability. Most database systems already have ACID transactions. If you do not want to set up a “big” database server, you can use sqlite for example. After that, I will discuss what steps can be taken to establish ACID properties with each file update pattern. See below for a discussion of atomicity and consistency properties. These first two patterns are so common that the ext4 filesystem in the Linux kernel even detects them and fixes some reliability shortcomings automatically.Technically, its outstanding feature is its extreme simplicity.
