new Replica(manager, colls, opts)
Constructor for the Replica class.
Replica sets are used just like regular data collections. Please see Provider for usage reference.
Options:
master{string} - Defines the master collection in the replica set. If omitted the first collection in the set is assumed to be the master.readStrategy{string} - Defines the read strategy for the replica set. See Replica#readStrategy.writeStrategy{string} - Defines the write strategy for the replica set. See Replica#writeStrategy.
Parameters:
| Name | Type | Argument | Description |
|---|---|---|---|
manager |
Manager | An EntreeJS instance. |
|
colls |
string[] | The names of the data collections participating in the replica set. There must be at least two collections in the array. |
|
opts |
object |
<optional> |
Additional options. |
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Members
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collections
-
An array of the names of the data collections participating in the replica set.
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manager
-
The EntreJS instance holding this replica set.
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master
-
Defines the master collection in the replica set. If omitted the first collection in the set is assumed to be the master.
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readStrategy
-
Defines the read strategy for the replica set. Defaults to
master."master"- Only the master collection is used for read operations (e.g. get, select)."round-robin"- All collections in the set are cycled for ever read request."feedback"(not available yet) - Collections with lower latency are given higher priority.
Read strategy allows for simple load and throughput balancing of back-end services.
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writeStrategy
-
Defines the write strategy for the replica set. Defaults to
rollback."rollback"- Attempts to recover the state of all collections in case any of them fails to write successfully."none"- Errors on failures are returned but no actions are taken.
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