Looks nice! On Mon, May 14, 2012 at 3:22 AM, Carlos <carlo...@gmail.com> wrote:
> Hello, > > I would like to introduce you to my Go Cassandra client/library, Gossie: > > https://github.com/carloscm/gossie > > My intention was to use my favorite database with my favorite language, > with a library that allowed me to take advantage of idiomatic Go code with > the main strengths of Cassandra. I focused on offering a smooth as possible > integration with Go, including auto marshaling of most primitive built-in > types and structs. I also wanted to focus on what I think is the main > strength of the Cassandra data model, its column-oriented storage with > ordering, which I think it is unfortunately overlooked by many people just > wanting a typical key/value store. Features include: > > - Connection pooling to N hosts, with transparent failover and retry of > queries > - A low level wrapper for the Thrift interface, much easier to use than > the bare Thrift bindings > - Extensive type marshaling, both automatic and custom, so you can force a > native integer to be serialised as a string for example > - Struct mapping into Cassandra rows (or row slices), with support for > both sparse and compact storage and field name/type overriding > - A high level query interface that deals with structs and mappings > instead of rows and column families > > Here is an example, using a sparse storage column family with a slice (the > equivalent in the current README.md is a bit outdated): > > /* > In CQL 3.0: > CREATE TABLE Timeline ( > UserID varchar, > TweetID bigint, > Author varchar, > Body varchar, > PRIMARY KEY (UserID, TweetID) > ); > */ > > // In Gossie: > type Tweet struct { > UserID string `cf:"Timeline" key:"UserID" cols:"TweetID"` > TweetID int64 > Author string > Body string > } > > pool := gossie.NewConnectionPool([]string{"localhost:9160"}, "Example", > PoolOptions{Size: 50, Timeout: 3000}) > query := pool.Query(NewMapping(&Tweet{})) > > // all tweets for a given user between TweetID 1000 and 2000 > result, err := query.Between(1000, 2000).Get("username") > > // iterating over results > for { > t := &Tweet{} > err := result.Next(t) > if err != nil { > break > } > } > > Key and comparator component marshaling and positions are implicit and > automatic, based on the struct mapping, making it very easy to use complex > comparators. Also the sparse row support is flexible, in the sense it > doesn't depend on a fixed number fields. It is able to detect a new object > in the row by discontinuities in the composite values. > > Feedback is welcome! Thank you! > >
