Redis
Redis is an open source, BSD licensed, advanced key-value store. It is often referred to as a data structure server since keys can contain strings, hashes, lists, sets and sorted sets.
Redis Usage in JumpScale.
Redis is used to cache our in process jobs and used as a queuing mechanism to pass information from one component to the other. Runs on port 9999
agentcontroller/master node
| Key | Type | HashKey | Value | Description |
|---|---|---|---|---|
| jobs:last | hash | grid id | int | incremental value for job id |
| jobs: |
hash | jobguid | json | All jobs used as cache |
| commands:queue: |
list | json | contains list of jobs that needs to get executed on the gid.nid combintation | |
| jobqueue: |
list | json | Job object used as return from agent/processmanager/worker |
on each node for workers
| Key | Type | HashKey | Value | Description |
|---|---|---|---|---|
| application | hash | applicationname | json | list of pids of application |
| healthcheck:lastcheck | hash | component name | int | Unix timestamp when component was last checked by monitor |
| healthcheck:monitoring | hash | type | mixed | Used to cache results/errors of healthchecker + lastcheck |
| healthcheck:status | hash | component name | boolean | Last status of component |
| eco:incr: |
value | int | Incremental id for eco | |
| logs:incr: |
value | int | Incremental id for jobs | |
| workers:joblastid | value | int | Incremental id for jobs started outside agentcontroller | |
| workers:jumpscriptlastid | value | int | Incremental id for jumpscripts stored in cache | |
| workers:jumpscripts:id | hash | id of jumpscript | json | Hash with as key the id of the jumpscript and value the jumpscript |
| workers:jumpscripts:name | hash | name of jumpscript | json | Hash with as key the name of the jumpscript and value the jumpscript |
| workers:sessions | hash | sessionid | json | Contains information about applications that make connection to the workers |
| workers:watchdog | hash | component name | int | Unix timestamp containing last heartbeat of component |