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Diffstat (limited to 'src')
| -rw-r--r-- | src/backend/storage/ipc/README | 18 |
1 files changed, 0 insertions, 18 deletions
diff --git a/src/backend/storage/ipc/README b/src/backend/storage/ipc/README deleted file mode 100644 index 913a4dab2ba..00000000000 --- a/src/backend/storage/ipc/README +++ /dev/null @@ -1,18 +0,0 @@ -src/backend/storage/ipc/README - -Cache Invalidation Synchronization Routines -=========================================== - -Mon Jul 18 11:09:22 PDT 1988 W.KLAS - -The cache synchronization is done using a message queue. Every -backend can register a message which then has to be read by -all backends. A message read by all backends is removed from the -queue automatically. If a message has been lost because the buffer -was full, all backends that haven't read this message will be -told that they have to reset their cache state. This is done -at the time when they try to read the message queue. - -The message queue is implemented as a shared buffer segment. Actually, -the queue is a circle to allow fast inserting, reading (invalidate data) and -maintaining the buffer. |