Different situations where fault tolerance is crucial

Replication techniques in the context of fault tolerance

1. Data Storage Systems:

RAID (Redundant Array of Independent Disks): In storage systems, RAID configurations distribute data across multiple disks with redundancy, allowing the system to continue functioning even if one disk fails.

2. Networks:

Load Balancing: Distributing network traffic across multiple servers ensures that if one server fails, others can still handle the load.
Redundant Networking Equipment: Having duplicate routers, switches, or network paths helps maintain connectivity in case of a device or link failure.

3. Servers and Computing Systems:

Clustering: Creating clusters of servers ensures that if one server fails, another can take over the workload seamlessly.
Virtualization: Running virtual machines on a server allows for easy migration of workloads to another server in case of hardware failure.

4. Power Systems:

Uninterruptible Power Supplies (UPS): Providing backup power through UPS systems ensures that critical systems have enough time to shut down slowly in the event of a power outage.

5. Software Applications:

Transaction Rollback: In database systems, implementing mechanisms to rollback transactions in case of errors or failures maintains data consistency.
Microservices Architecture: Breaking down applications into smaller, independent services allows for the isolation of faults, preventing the entire system from failing if one service encounters issues.

6. Cloud Computing:

Distributed Cloud Architecture: Distributing applications across multiple cloud regions or providers enhances fault tolerance by reducing the impact of a failure in a specific region or service.

7. Telecommunications:

Redundant Communication Links: In telecommunications, having multiple communication links ensures connectivity even if one link fails.

Fault Tolerance in System Design

Fault tolerance is the ability of a system to continue performing, or at least minimize downtime, even when some components fail.

Important Topics for Fault Tolerance in System Design

What is Fault Tolerance?
Different situations where fault tolerance is crucial
Replication techniques in the context of fault tolerance
Fault Tolerance vs. High Availability Load Balancing
Fault Tolerance of a Stateless Component
Fault Tolerance of a Stateful Webstore