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Diffstat (limited to 'cpp/src/qpid/asyncStore/README')
| -rw-r--r-- | cpp/src/qpid/asyncStore/README | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/cpp/src/qpid/asyncStore/README b/cpp/src/qpid/asyncStore/README new file mode 100644 index 0000000000..4590bfea62 --- /dev/null +++ b/cpp/src/qpid/asyncStore/README @@ -0,0 +1,34 @@ +This folder contains source code for the new async store module. It implements the interface +described in qpid/broker/AsyncStore.h. + +NOTE: This is NOT the current (old) async store module implemented through the sync interface +in qpid/broker/MessageStoere.h. That store will continue to be kept separately at +https://svn.jboss.org/repos/rhmessaging/store/trunk/cpp (or if no checkin credentials, then +read-only at http://anonsvn.jboss.org/repos/rhmessaging/store/trunk/cpp). + +Layout +------ + +qpid + | + +---asyncStore (Interface layer with broker) + | + +---jrnl2 (Async journal) + + +The jrnl2 directory contains the asynchronous journal code, and contains all the journal +file management and low-level writing and reading. This code knows only about writing +opaque data blobs to disk in records which may or may not contain a transaction identifier. +Records may be enqueued (written) or dequeued (which writes to disk the logical deletion of an +earlier enqueued record). + +The upper asyncStore directory contains the implementation of the broker's AsyncStore +interface and the necessary logic to interface this to the jrnl2 code. It also provides +transaction handling and recovery logic. + +Building +-------- +Currently, this module is a Linux-only module, owing to the dependency of the jrnl2 layer +on the Linux-only libaio library. + +Only cmake is supported. |