Scalable architecture

1. Failover

1.1. Cold

1.2. Warm

1.3. Hot

1.3.1. Flapping problem

1.3.2. Active/Active pair

1.3.3. Active/Passive pair

2. Load Balancing

2.1. DNS

2.2. Hardware

2.3. Software

2.3.1. Layer 4

2.3.2. Layer 7

2.3.2.1. Caching

2.3.2.2. mod_rewrite

2.3.2.3. HTTP

2.3.2.4. Iné protokoly ako HTTP

2.3.2.4.1. Obalím do HTTP

2.3.2.4.2. Random shuffling

2.3.3. Global server load balancing

3. Database partitioning

3.1. Table clustering

3.2. Federation - shard

3.2.1. Denormalization

3.2.2. Federation logic

4. Vertical scalability

5. Horizontal scalability

6. >>REST is the best :) <<

7. Scalable

7.1. Traffic growth

7.2. Dataset growth

7.3. Maintainable system

8. Database replication

8.1. Master/Slave

8.2. Tree

8.3. Maser/Master