Previously we had a per-connection
bytes.Buffer // to be written to the connection
sync.Cond // to allow us to Wait for more data
This had the major disadvantage that the buffer was unbounded and so
a slow client could cause memory exhaustion in the server. This patch
replaces these with a single
chan *logEntry
which is naturally bounded and supports blocking read. We make write
non-blocking using select i.e. we drop messages rather than allocate
more space.
Signed-off-by: David Scott <dave.scott@docker.com>
6aca715ad8