Cloud Object Mirroring Across Fixed-Offset and Unified Layouts
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Solution Overview
Problem
Different cloud providers have varying data layout requirements, which complicates the use of a unified object format for storing and retrieving data across multiple cloud providers, leading to inefficient storage and loss of compression savings.
Innovation Solution
A custom mirroring operation that adapts to the specific data layout requirements of each cloud provider, dynamically selecting compression algorithms and formatting data to create mirrored objects in a unified object format, ensuring efficient storage and cost savings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a unified object format is used to store data across multiple cloud providers, then data portability and storage efficiency are improved, but compatibility with different cloud providers' data layout requirements deteriorates
Solution Approach 1:
The object is segmented into multiple sections: a header section containing metadata and a data section containing the actual data. This segmentation allows the unified object format to maintain a consistent structure while accommodating different cloud providers' data layout requirements in the data section, thus resolving the contradiction between data portability and compatibility.
Solution Approach 2:
The system dynamically changes parameters such as compression algorithms and data layout configurations based on the target cloud provider's requirements. This allows the unified object format to adapt to different cloud providers while maintaining core compatibility, resolving the contradiction between versatility and reliability.
2Reliability
If data is stored without compression to meet fixed offset requirements, then compatibility with certain cloud providers is improved, but storage efficiency and cost savings deteriorate
Solution Approach 1:
Compression is performed in advance during the object creation process, and compression metadata is recorded in the header section. This preliminary compression action allows the data to be stored in a compressed state while maintaining compatibility with cloud providers that require fixed offsets, as the compression information is properly tracked and managed.
Solution Approach 2:
The header section acts as an intermediary that stores compression metadata and mapping information. This intermediary structure enables the system to maintain compressed data in the data section while providing the fixed offset compatibility required by certain cloud providers, thus resolving the contradiction between compatibility and storage efficiency.
3Loss of substance
If compression algorithms are dynamically selected for different cloud providers, then storage efficiency is improved, but system complexity deteriorates
Solution Approach 1:
The system dynamically changes compression algorithm parameters based on the target cloud provider's characteristics and the data being stored. This parameter adaptation allows optimization of storage costs while managing complexity through a standardized interface that abstracts the underlying algorithm selection and configuration.
Data Source
AI summary
Techniques are provided for mirroring objects between object stores hosted by cloud providers that have different data layout requirements. An object may be stored within a first object store that supports a fix offset format where uncompressed data is stored according to fixed offsets and boundaries within fixed size objects. A mirroring operation may be used to mirror the object to a second object store that supports a unified object format where compressed data can be stored at non-fixed offsets and boundaries within variable sized objects. The mirroring operation selects a compression algorithm and compresses the object on the fly to create a mirrored object having the unified object format. The mirrored object, populated with the compressed data and slot header metadata comprising compression information for how to locate and decompress the data in the mirrored object, is stored into the second object store.