# ICTC Technological Framework

ICTC consists of Transaction Manager (TM), Task Actuator (TA), and Transaction Compensator (TC).

Transaction Order: A transaction, including one or more transaction tasks, that requires all tasks to be either fully successful or fully rejected. Transaction Task: A task within a transaction, including local tasks of the caller and remote tasks of other parties involved.

<figure><img src="/files/wqLczlFmNmpK77nsNEtW" alt=""><figcaption></figcaption></figure>

### Task Actuator

The Task Actuator uses a "best-effort delivery" policy and will definitely return a result (success/failure).

<figure><img src="/files/eWCHt1L3hfcYJGYnfj2k" alt=""><figcaption></figcaption></figure>

### Transaction Manager

The Transaction Manager is used to manage the status of transactions, operate the Actuator, handle exceptions and call the Compensator. Transaction Manager implementation includes the Saga Transaction Manager (SagaTM) and the 2PC Transaction Manager (TPCTM).

**Saga Transaction Manager**

<figure><img src="/files/WjSdGslHr1k7867kvkfF" alt=""><figcaption></figcaption></figure>

**2PC Transaction Manager**

<figure><img src="/files/ykkIBvHTcYfZUhepMKYb" alt=""><figcaption></figcaption></figure>

### Transaction Compensator

The Transaction Compensator function is implemented in Transaction Manager and is used to execute compensation operations when an exception occurs in a transaction, including automatic compensation, governance or manual compensation.


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