How can I change default Couchbase item size?

Question

I am using the .NET Couchbase Client API that includes Enyim.Caching. I have a DataTable that is approximately 55 megs and it is not getting cached. I understand that there is a "soft" max for the item size of 20 megs.

How can I change the default max item size in order to cache this object?

Answer 1

Per MikeW from the Couchbase forum post here:

This requires modifying a constant in the source code and building Couchbase yourself.

It seems as if there isn't a way around it. Thanks for the help.

Answer 2

Are you using a Memcached bucket or Couchbase bucket? If you're using a Memcached bucket then you're likely hitting the 1MB limit. A quick sample program:

var config = new CouchbaseClientConfiguration();
config.Urls.Add(new Uri("http://127.0.0.1:8091/pools/default"));
config.Bucket = "memcached";
config.BucketPassword = "qwerty";
var client = new CouchbaseClient(config);

var size = 1000000;
var sb = new StringBuilder();
for (int i = 0; i < size; i++) { sb.Append("z"); };
var data = sb.ToString();
var result = client.Store(StoreMode.Set, "foo", data);
Console.WriteLine(data.Length + ": " + result);

When the size variable is set to 1000000, result is true. When size is set to just over a MB, say 1100000, then result will be false. If you instead use a Couchbase bucket, you can set size to 20000000 and the result will be true. However, setting size to 21000000 will cause the Store operation to fail.

If you're not using a Memcached bucket, please let me know... Also, note that I'm using the .NET 1.0 client with 1.8 server for this sample.

-- John