Inability to have multiple bloom filters stored in redis?

[smitchelus]

Hi, I'm attempting to use your Redis backed bloomfilter, but it appears that it always stores the filter under a hardcoded key called "normalbloomfilter". How can I have a second bloom filter without overwriting the first one?

[DivineTraube]

Hi, thanks for raising the issue. The problem you describe is in fact present, as every Bloomfilter will use the same keys. I will fix it soon.

[smitchelus]

Cool, thanks!

[ChrisCurtin]

I have submitted a pull request with this feature (Scott and I work together).

[DivineTraube]

The feature is now implemented using the Builder, Bloom filter can now be assigned names, that will be used to distinguish them:

String host = "localhost";
int port = 6379;
String filterName = "normalbloomfilter";
//Open a Redis-backed Bloom filter
BloomFilter<String> bfr = new FilterBuilder(1000, 0.01)
    .name(filterName) //use a distinct name
    .redisBacked(true)
    .redisHost(host) //Default is localhost
    .redisPort(port) //Default is standard 6379
    .buildBloomFilter();

bfr.add("cow");

//Open the same Bloom filter from anywhere else
BloomFilter<String> bfr2 = new FilterBuilder(1000, 0.01)
    .name(filterName) //load the same filter
    .redisBacked(true)
    .buildBloomFilter();
bfr2.add("bison");

print(bfr.contains("cow")); //true
print(bfr.contains("bison")); //true