Temporal is a scalable runtime for executing reentrant processes called workflows, which consist of activities and workers. The temporal architecture includes components like a temporal server, database, and Elasticsearch for processing requests and managing workflow execution. Users can monitor and debug workflow states through the temporal web UI.

1. Manav Joshi
Temporal

2. What is Temporal ?
• Temporal is a scalable and reliable runtime for Reentrant Processes called
Temporal Work
fl
ow Execution. - de
fi
nition by temporal.

3. Workflow
• Activity, Work
fl
ow, Worker, Initiator.
• An Activity is just a function that contains your business logic
• Work
fl
ows are functions that organises Activity method calls.
• Workers host the Activity and Work
fl
ow code and execute the code piece by piece
• To start a Work
fl
ow, we must send a signal to the Temporal server to tell it to track
the state of the Work
fl
ow.
• A Temporal Work
fl
ow Execution is a Reentrant Process. A Reentrant Process
is resumable, recoverable, and reactive.

4. Coffee maker Workflow

5. Temporal Cluster
• Elasticsearch, database, temporal server, temporal web.
• Elasticsearch to process json request and get the results from database.
• Database stores the tasks to be dispatched, State of Work
fl
ow Executions,
Namespace metadata and Visibility data.
• Temporal Server consists of Frontend gateway, History subsystem, Matching
subsystem and Worker Service.
• Temporal Web UI is a GUI that provides users with Work
fl
ow Execution state
and metadata and is intended to be used to debug execution issues.