Partial Failures #

Partial failures in distributed systems occurs when some components fail while others continue operating, making the system partially functional and partially failing.

Unlike monoliths that fail entirely, these non-deterministic failures such as node crashes, network partitions, or timeouts are common and challenging, requiring design for resilience.

Crash Faults #

See this medium post: Modes of Failures.

Idempotent Operations #

Are operations that can be applied multiple times without changing the result beyond the initial application.

Load Balancing #

Load balancers are network resources that distributes requests across available services.

There are two types of load balancers:

Network Load Balancers #

Are load balancers that can only work up to the Network Layer which is responsible for sending data to different networks.

Application Load Balancers #

Are load balancers that can read the full application message.

Distributed Caching #

Caching #

Caching is the method of storing data in a temporary and fast storage and is used for improving resource access.

Caching Strategies #

See:

• Redis: Caching Strategies
• Hello Interview: Caching in System Design Interviews