Improve composed index

[jannyHou]

There is an index design problem I am making time to fix, suppose you use property loopbackmodelname to specify a model name, and you have an indexable property age, you need to create a index in model.json that contains those two properties to improve the performance.

Acceptance Criteria

• [ ] Add the modelName to our indexing Design Document so queries filter for indexable properties in that model.
  • [ ] Enable it for both ways of indexing properties (Both examples shown below).
• [ ] write a blog post for the index improvement.

{
  properties: {
    foo: {index: true}
  }, // the first way
  indexes: {
     composed: [foo, bar, baz]
  }  // the second way
}

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[stale[bot]]

This issue has been closed due to continued inactivity. Thank you for your understanding. If you believe this to be in error, please contact one of the code owners, listed in the CODEOWNERS file at the top-level of this repository.

[dhmlau]

Closing as PR#47 has landed.