Auto-generated Partition Key for Balanced Distributed Database Storage
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Solution Overview
Problem
Distributed databases often face issues with unbalanced data distribution among nodes due to hash-based key mapping techniques, leading to inefficient storage and retrieval operations.
Innovation Solution
Implementing an application programming interface (API) with automatic node selection and key generation, where a node with suitable capacity is chosen for storing data items, and a key is generated that includes information about the selected node, ensuring balanced data distribution and efficient operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If hash function mapping is used to determine node selection, then data item storage and retrieval can be performed, but unbalanced data distribution among nodes occurs
Solution Approach 1:
Instead of selecting a node first and then generating a key that maps to it (conventional approach), the patent inverts the process by generating a key first and then selecting a node based on that key's hash value. This inversion allows the system to maintain simple hash-based operations while achieving balanced distribution through intelligent node selection based on current capacity
Solution Approach 2:
The patent changes the parameter used for node selection from purely hash-based deterministic mapping to a dynamic selection process that considers both the hash value of the key and the current capacity status of nodes. This parameter change enables the system to adapt to changing load conditions while maintaining operational simplicity
2Manufacturing precision
If automatic node selection and key generation are implemented, then balanced data distribution is achieved, but system complexity increases
Solution Approach 1:
The system performs self-service by automatically monitoring its own capacity distribution across nodes and autonomously making decisions about key generation and node selection. This eliminates the need for external intervention or complex manual balancing mechanisms, achieving balanced distribution through self-regulating automatic processes
Solution Approach 2:
The patent implements feedback mechanisms where the system continuously monitors capacity utilization across nodes and uses this feedback information to dynamically adjust key generation and node selection decisions. This feedback loop enables the system to maintain balanced distribution automatically without requiring complex external control systems
Data Source
AI summary
A distributed database may comprise a plurality of nodes maintaining a collection of data items indexed by key values. Upon receiving a request to store a data item, a node of the database may be selected based on the node's suitability for storing the data item. The distributed database may generate a key to identify the data item, such that the generated key identifies the data item and comprises information indicative of the selected node. The distributed database may provide the generated key to an application programming interface client in response to the request.