Learn everything you need to know about System Design all in one place, including What is system design, System Design Performance Metrics, Scalability, Horizontal Scaling, Vertical Scaling, Reliability, and more.
System Design Fundamentals
System Design
System Design Fundamentals
Overview
What is System Design?
Learn everything you need to know in System Design all in one place, including proxies, load balancers, caching, SQL and NoSQL databases, Database replication, Database sharding, and more.
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System Design Performance Metrics
The Metrics below are used to measure the performance of a system.
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Scalability
Scalability describes a system's elasticity. It refers to a system's ability to handle or withstand an increase in workload without sacrificing system performance. It’s the ability of a system to grow and manage an increased volume of requests(traffic) from users over time.
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Horizontal Scaling (Scaling out)
Horizontal scaling also known as Scaling out simply means adding more nodes/machines to your infrastructure to the existing hardware resource pool to cope with new demands.
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Vertical Scaling (Scaling up)
Vertical scaling also known as scaling up means adding additional resources to your server such as upgrading CPU, Memory, Storage, and Network speeds.
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System Reliability
System Reliability is the probability that a system will perform correctly during a specific time duration. A system is reliable when it adequately follows the defined performance specifications and no repair is required during that period.
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System Availability
System availability is the probability that a system works properly when it’s requested for use. It means that the system is available for use as a percentage of scheduled uptime and is not due to problems or other interruptions that are not scheduled. It’s a measure that a system has not failed or undergoing repair when it needs to be used.
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Availability Vs Reliability
Availability is a measure of the % of time the system is in an operable state while reliability is a measure of how long the item performs its intended function without breaking down.
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System Efficiency
System efficiency measures how well a system works. The two metrics used to measure system efficiency are Latency and Throughput.
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