Software → System Design
System Workload
A quantified description of how users and systems exercise a service across traffic, data, concurrency, and access patterns.
Motivation
A quantified description of how users and systems exercise a service across traffic, data, concurrency, and access patterns.
Where it fits
This concept provides a shared vocabulary for designing, documenting, measuring, or operating software systems.
Mental model
Treat it as a structured tool: define the question being answered, use consistent terminology, and connect the result to decisions and follow-up work.
Subconcepts
Read:Write Ratio
The proportion of reads compared with writes in the workload.
Reads/s
The number of read operations performed per second.
Writes/s
The number of write operations performed per second.
Hot Data
Frequently accessed data that benefits from fast storage or caching.
Cold Data
Infrequently accessed data suited to cheaper or slower storage tiers.
Access Patterns
The shapes of reads, writes, scans, bursts, locality, and concurrency that drive design choices.
Practical use
A workload model should distinguish average, peak, burst, seasonal, and growth scenarios and state the confidence of each estimate.
Common mistakes
- Using ambiguous definitions or units.
- Collecting or documenting information without connecting it to a decision.
- Failing to keep the artifact or measurement current as the system changes.
Related concepts
See the linked concepts in the knowledge graph for prerequisites and adjacent practices.