Complete lecture is well summurised in Harvard_CS75_Notes and medium post/sakshi8699.
More concise summuary is,
- Upsizing: Make your machine stronger by upgrading its components.
- Single Mighty Machine: Enhance one machine's power instead of adding more.
- Easy Setup, Limited Growth: Simple but hits limits fast.
- Teamwork: Many small machines work together, sharing the load.
- Divide and Conquer: Spread work across multiple machines for easier handling.
- Endlessly Expandable: Keep adding machines as needed for flexibility.
- Equal Distribution: Spread workload evenly across servers.
- Managed Traffic: Bind tool helps in fair load distribution.
- Prevents Overloading: Keeps servers from getting overwhelmed.
- Data Protection: RAID systems ensure data redundancy and/or speed.
- RAID 1: Mirrors data for safety.
- RAID 10: Combines safety and speed.
- RAID 0: Speeds up data access but lacks redundancy.
- Quick Access: Stores frequently used data for faster retrieval.
- Temporary Storage: Keeps frequently accessed data close by.
- Boosts Performance: Speeds up operations, especially for popular content.
- Traffic Management: Distributes incoming requests among servers.
- Smart Routing: Sends requests to least busy server for balanced load.
- Ensures Smooth Performance: Prevents servers from becoming overwhelmed.
- Protection Layers: Multiple security measures safeguard systems.
- Comprehensive Defense: Includes firewalls, encryption, and password protection.
- Continuous Monitoring: Keeps systems secure against potential threats.
- Purpose: Replication involves duplicating data across multiple locations or servers for redundancy and improved availability.
- Techniques: Master-slave replication, multi-master replication.
- Benefits: Enhances fault tolerance, reduces data loss risk, improves system reliability.
Another article to help understand scalibility - https://newsletter.ashishps.com/p/scalability