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Circuit breaker for Cassandra event log #173

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krasserm opened this issue Dec 17, 2015 · 0 comments · Fixed by #189
Closed

Circuit breaker for Cassandra event log #173

krasserm opened this issue Dec 17, 2015 · 0 comments · Fixed by #189
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@krasserm
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enhancement
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0.5

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@krasserm
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A circuit breaker is an actor that wraps an EventLog actor. If an event log actor is busy re-trying a write longer than a configurable limit, the circuit breaker starts rejecting incoming requests (that require interaction with the storage backend). This prevents event-log and event-sourced actor queues from growing during communication problems with the storage backend. If communication with the storage backend returns to normal, the circuit breaker is closed again. Depends on #176 and is a prerequisite for #174.
@krasserm krasserm self-assigned this Dec 17, 2015
@krasserm krasserm added this to the 0.5 milestone Dec 17, 2015
@krasserm krasserm mentioned this issue Dec 17, 2015
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krasserm referenced this issue Dec 17, 2015
@volkerstampa
Implement delete for LeveldbEventLog
0ee6b2a
@krasserm krasserm mentioned this issue Dec 17, 2015
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@krasserm krasserm changed the title Asynchronous event storage SPI Circuit breaker for event log Dec 17, 2015
@krasserm krasserm changed the title Circuit breaker for event log Circuit breaker for Cassandra event log Jan 6, 2016
krasserm added a commit that referenced this issue Jan 9, 2016
@krasserm
Circuit breaker for Cassandra event log and chaos test bug fix
a62e1b1 
- closes #173
- fixes #174
krasserm added a commit that referenced this issue Jan 10, 2016
@krasserm
Circuit breaker for Cassandra event log and chaos test bug fix
bce9a2b 
- closes #173
- fixes #174

Further changes

- Undo write request timeouts from previous commits (as they caused chaos tests to fail)
- Detailed documentation about failure handling strategies
@krasserm krasserm mentioned this issue Jan 10, 2016
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Circuit breaker for Cassandra event log and chaos test bug fix RBMHTechnology/eventuate
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