BIND 10 #2219: switch to memory-efficient version of in memory data source

[BIND 10 Development]

#2219: switch to memory-efficient version of in memory data source
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                   Reporter:         |                 Owner:
  jinmei                             |                Status:  new
                       Type:  task   |             Milestone:
                   Priority:         |  Sprint-20120904
  medium                             |            Resolution:
                  Component:  data   |             Sensitive:  0
  source                             |           Sub-Project:  DNS
                   Keywords:         |  Estimated Difficulty:  6
            Defect Severity:  N/A    |           Total Hours:  0
Feature Depending on Ticket:         |
  scalable inmemory                  |
        Add Hours to Ticket:  0      |
                  Internal?:  0      |
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Description changed by jinmei:

Old description:

> As already noted in #2101 we'll need to migrate to the new version
> of the in-memory data source once all other tasks in #2101 are
> completed.
>
> It will be to update the place where we instantiate
> `memory::InMemoryClient`
> instead of the current bare `InMemoryClient` (maybe adjusting
> constructor parameters), confirm all tests pass (hopefully most will,
> but there'll probably be some regressions, so fix them), then
> remove the old implementation.

New description:

 As already noted in #2101 we'll need to migrate to the new version
 of the in-memory data source once all other tasks in #2101 are
 completed.

 It will be to update the place where we instantiate the current bare
 `InMemoryClient` (in the isc::datasrc namespace) objects so we
 instantiate `memory::InMemoryClient` instead (maybe adjusting
 constructor parameters), confirm all tests pass (hopefully most will,
 but there'll probably be some regressions, so fix them), then remove
 the old implementation.

--

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Ticket URL: <https://bind10.isc.org/ticket/2219#comment:3>
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