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| author | Matthias Radestock <matthias@lshift.net> | 2009-09-08 11:18:26 +0100 |
|---|---|---|
| committer | Matthias Radestock <matthias@lshift.net> | 2009-09-08 11:18:26 +0100 |
| commit | f7aaa4f2423f05cadaa1c04a9fe684bedfd29b16 (patch) | |
| tree | 04f8238ebd83142d73b6203e0ca8ab5e1e5f48b2 /include/rabbit.hrl | |
| parent | 6d89e86148174f2abc8a83ddb71555c498a25a16 (diff) | |
| download | rabbitmq-server-git-f7aaa4f2423f05cadaa1c04a9fe684bedfd29b16.tar.gz | |
change guid to a binary, using the md5 of term_to_binary
The main motivation is to reduce the memory and on-disk footprint of
the guid from ~34 bytes to 16. But it turns out that this actually
results in a speed improvement of a few percent as well, even for
non-persistent messaging, presumably due to the memory management
effects and the fact that 16 byte binaries are easier to copy between
processes than the deep(ish) original guid structure.
Diffstat (limited to 'include/rabbit.hrl')
| -rw-r--r-- | include/rabbit.hrl | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/rabbit.hrl b/include/rabbit.hrl index c17ac7eb5a..095044e797 100644 --- a/include/rabbit.hrl +++ b/include/rabbit.hrl @@ -89,7 +89,7 @@ -type(file_open_mode() :: any()). %% this is really an abstract type, but dialyzer does not support them --type(guid() :: any()). +-type(guid() :: binary()). -type(txn() :: guid()). -type(pkey() :: guid()). -type(r(Kind) :: |