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3.0 (unreleased)

  • The repository now lives at https://github.com/redis/redis-rb. Thanks, Ezra!

  • Change API for BLPOP, BRPOP and BRPOPLPUSH. Both BLPOP and BRPOP now take a single argument equal to a string key, or an array with string keys, followed by an optional hash with a :timeout key. BRPOPLPUSH also takes an optional hash with a :timeout key as last argument for consistency. By default, these commands use a timeout of 0 to not time out.

  • When SORT is passed multiple key patterns to get via the :get option, it now returns an array per result element, holding all GET substitutions.

  • The MSETNX command now returns a boolean.

  • The ZRANGE, ZREVRANGE, ZRANGEBYSCORE and ZREVRANGEBYSCORE commands now return an array containing [String, Float] pairs when :with_scores => true is passed.

  • The ZINCRBY and ZSCORE commands now return a Float score instead of a string holding a representation of the score.

  • The client now raises custom exceptions where it makes sense.

    If by any chance you were rescuing low-level exceptions (Errno::*), you should now rescue as follows:

    Errno::ECONNRESET    -> Redis::ConnectionError
    Errno::EPIPE         -> Redis::ConnectionError
    Errno::ECONNABORTED  -> Redis::ConnectionError
    Errno::EBADF         -> Redis::ConnectionError
    Errno::EINVAL        -> Redis::ConnectionError
    Errno::EAGAIN        -> Redis::TimeoutError
    Errno::ECONNREFUSED  -> Redis::CannotConnectError
    
  • Always raise exceptions originating from erroneous command invocation inside pipelines and MULTI/EXEC blocks.

    The old behavior (swallowing exceptions) could cause application bugs to go unnoticed.

  • Implement futures for assigning values inside pipelines and MULTI/EXEC blocks. Futures are assigned their value after the pipeline or MULTI/EXEC block has executed.

$redis.pipelined do
  @future = $redis.get "key"
end

puts @future.value
  • Ruby 1.8.6 is officially not supported.

  • Support ZCOUNT in Redis::Distributed (Michael Dungan).

  • Pipelined commands now return the same replies as when called outside a pipeline.

    In the past, pipelined replies were returned without post-processing.

  • Support SLOWLOG command (Michael Bernstein).

  • Calling SHUTDOWN effectively disconnects the client (Stefan Kaes).

  • Basic support for mapping commands so that they can be renamed on the server.

  • Connecting using a URL now checks that a host is given.

    It's just a small sanity check, cf. #126

  • Support variadic commands introduced in Redis 2.4.

2.2.2

  • Added method Redis::Distributed#hsetnx.

2.2.1

  • Internal API: Client#call and family are now called with a single array argument, since splatting a large number of arguments (100K+) results in a stack overflow on 1.9.2.

  • The INFO command can optionally take a subcommand. When the subcommand is COMMANDSTATS, the client will properly format the returned statistics per command. Subcommands for INFO are available since Redis v2.3.0 (unstable).

  • Change IO#syswrite back to the buffered IO#write since some Rubies do short writes for large (1MB+) buffers and some don't (see issue #108).

2.2.0

  • Added method Redis#without_reconnect that ensures the client will not try to reconnect when running the code inside the specified block.

  • Thread-safe by default. Thread safety can be explicitly disabled by passing :thread_safe => false as argument.

  • Commands called inside a MULTI/EXEC no longer raise error replies, since a successful EXEC means the commands inside the block were executed.

  • MULTI/EXEC blocks are pipelined.

  • Don't disconnect on error replies.

  • Use IO#syswrite instead of IO#write because write buffering is not necessary.

  • Connect to a unix socket by passing the :path option as argument.

  • The timeout value is coerced into a float, allowing sub-second timeouts.

  • Accept both :with_scores and :withscores as argument to sorted set commands.

  • Use hiredis (v0.3 or higher) by requiring "redis/connection/hiredis".

  • Use em-synchrony by requiring "redis/connection/synchrony".

2.1.1

See commit log.

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