Question

I am using redis gem with Ruby 1.9

Is it is possible to catch Redis exceptions inside Redis.pipelined to make sure the rest of the batch gets executed too?

I tried
redis.pipelined do
begin
redis.hGet …
rescue Redis::ComandError
…
end
end
but the rescue code never gets executed.

Answer 1

Multi seems to work similarly to pipelined except each operation is atomic. My “aaa” key was set even tho the smembers caused an exception to be thrown. I know this isn’t exactly what you were looking for since u can’t handle the exception inside the block.

#> $redis.multi do
*>   $redis.set "asdf", 1
*>   $redis.smembers "asdf"
*>   $redis.set "aaa", 2
*> end