Java app can't access cache entries written by other processes

[Mike Stoddart]

I'm testing a simple application using xmemcached that will read cache values set by a Python application. For whatever reason, my Java app can't read any entries written by the Python app. The Java app can read entries that it writes, but nothing written by another process. This is confusing me - does this ring any bells with anyone?

                        XMemcachedClientBuilder builder = new XMemcachedClientBuilder(

                                        AddrUtil.getAddresses(MEMCACHED_HOSTNAME + ":"

                                                        + MEMCACHED_PORT));

                        builder.setCommandFactory(new BinaryCommandFactory());

                        client = builder.build();

                        System.out.println("Servers: " + client.getAvailableServers());

                        String result;

                        try {

                                result = client.get("group_perms");

                                if (result != null) {

                                        System.out.println("Result: " + result.toString());

                                } else {

                                        System.out.println("No result");

                                }

                                client.set("age", 0, "44");

                                System.out.println("Age: " + client.get("age"));

                        } catch (TimeoutException e) {

                                // TODO Auto-generated catch block

                                e.printStackTrace();

                        } catch (InterruptedException e) {

                                // TODO Auto-generated catch block

                                e.printStackTrace();

                        } catch (MemcachedException e) {

                                // TODO Auto-generated catch block

                                e.printStackTrace();

                        }

Thanks

[Mike Stoddart]

Apologies for the weird formatting - I can't get it to format properly.

[Mike Stoddart]

I didn't realize that Django was prefixing all cache keys with a version number, so a key of:

"cache_key"

Is actually written to Memcached by Django as:

":1:cache_key"

Where the ":1:" is a version number specified in the Django settings.

Oops.

On Wednesday, 6 April 2016 15:25:25 UTC-4, Mike Stoddart wrote: