Two-Phase Commit
A distributed transaction protocol that coordinates multiple participants through a prepare phase and a commit phase, ensuring the atomicity of distributed transactions.
Timeline (last 90 days)
External APIs generally do not support two-phase commit, so the sandbox needs to approximate transaction semantics through recording, simulation or compensating operations.
The Saga pattern differs from two-phase commit (2PC) in that it does not require resource locking, making it more suitable for cross-service scenarios involving external APIs, but it can only guarantee eventual consistency, and the compensating actions themselves must also be idempotent.
An atomic transaction requires a set of database operations to either all succeed or all roll back, and typical implementations rely on the ACID properties of relational databases; in distributed environments, two-phase commit (2PC) or the Saga pattern must also be introduced to coordinate cross-service transactions.
Workarounds for the tool-call side-effect problem include: executing candidates in a sandbox or transaction and committing after confirmation, or abstracting side-effecting actions into rollback-capable two-phase operations.
The two-phase dry-run validation borrows the idea of two-phase commit (2PC) from the database field; the first phase is the simulation phase that validates permissions and dependencies, and the second phase is the commit phase that performs the actual state changes
分布式系统中部分失败的解决模式包括两阶段提交（2PC）、Saga模式和事件溯源（Event Sourcing）
两阶段提交保证强一致但牺牲可用性，Saga模式通过补偿事务实现最终一致
All Facts (8)
预冻结本质上是两阶段提交（2PC, Two-Phase Commit）思想的简化应用
80%UnverifiedExternal APIs generally do not support two-phase commit, so the sandbox needs to approximate transaction semantics through recording, simulation or compensating operations.
50%UnverifiedThe Saga pattern differs from two-phase commit (2PC) in that it does not require resource locking, making it more suitable for cross-service scenarios involving external APIs, but it can only guarantee eventual consistency, and the compensating actions themselves must also be idempotent.
50%UnverifiedAn atomic transaction requires a set of database operations to either all succeed or all roll back, and typical implementations rely on the ACID properties of relational databases; in distributed environments, two-phase commit (2PC) or the Saga pattern must also be introduced to coordinate cross-service transactions.
50%UnverifiedWorkarounds for the tool-call side-effect problem include: executing candidates in a sandbox or transaction and committing after confirmation, or abstracting side-effecting actions into rollback-capable two-phase operations.
50%UnverifiedThe two-phase dry-run validation borrows the idea of two-phase commit (2PC) from the database field; the first phase is the simulation phase that validates permissions and dependencies, and the second phase is the commit phase that performs the actual state changes
50%Unverified两阶段提交保证强一致但牺牲可用性，Saga模式通过补偿事务实现最终一致
50%Unverified分布式系统中部分失败的解决模式包括两阶段提交（2PC）、Saga模式和事件溯源（Event Sourcing）
50%