- Distribution and high availability: Indexes are in shards, and each shard can be replicated.
- Multi-tenancy, basically support for more than one index with different configuration
- Their update API seems to have several levels of consistency.
- They support all the features that are now standard such as facets, different weighting of various parts of documents, different mappers, etc.
- And its API is very simple indeed.
Recollect is a new startup that enables archiving, downloading, and searching of your pictures and activities (tweets and check-ins for now). Their UI has an interesting timeline look.