Partition tolerance
Partition tolerance is the ability of a distributed system to continue operating despite communication failures between parts of the system.
ScyllaDB in Action
Network partition tolerance is the ability of a distributed system to continue operating despite disconnected nodes or network partitions.
- How it is used
- Uses partition tolerance to preserve database availability when nodes cannot communicate.
- How deep it goes
- Explains the CAP trade-off, replica responses, consistency levels, and eventual consistency, but defers deeper partition-recovery mechanics.
- Examples
- Illustrates disconnected nodes through a three-replica cluster using ALL, QUORUM, and ONE consistency levels.
- What you can do after
- Evaluate consistency-level choices and operate a replicated ScyllaDB cluster through node-loss trade-offs.
PostgreSQL Mistakes and How to Avoid Them
Partition tolerance is the ability of a distributed system to continue operating despite dropped or delayed network messages.
- How it is used
- Frames PostgreSQL high-availability design as an unavoidable choice among consistency, availability, partition tolerance, and latency.
- How deep it goes
- Defines CAP and PACELC, then demonstrates replication conflicts and schema failure without developing theorem proofs or recovery procedures.
- Examples
- Uses bidirectional PostgreSQL ticket replication, duplicate identity values, and a replicated-column rename that stops the worker.
- What you can do after
- Evaluate/understand distributed-system tradeoffs before selecting PostgreSQL replication and multi-master designs.
Read how PostgreSQL Mistakes and How to Avoid Them explains partition tolerance →
Related concepts
- CAP theoremused by · The CAP theorem is a distributed-systems impossibility result stating that consistency, availability, and partition tolerance cannot all be guaranteed during a network partition.
- network partitionuses · A network partition is a failure condition in which disrupted connectivity prevents groups of otherwise operating components in a distributed system from communicating reliably.
- partitionaddresses · A partition is a distinct subdivision of a larger data, storage, or work unit that can be stored, managed, or processed separately.
- fault tolerancekind of · Fault tolerance is the ability of a system to continue providing correct or acceptable service despite failures in its components or operating environment.
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