Commit c84e9b1f authored by Nils Goroll's avatar Nils Goroll

doc: minor edit

parent 46724a74
......@@ -54,7 +54,7 @@ Includes (ESI). The VDP implements content composition in client
responses as specified by ``<esi>`` directives in the response body,
just as Varnish does with its `standard ESI processing`_. While
standard Varnish processes ESI subrequests serially, in the order in
which the ``<esi>`` directives appear in the response, the VDP
which the ``<esi>`` directives appear in the response, the pesi VDP
executes the subrequests in parallel. This can lead to a significant
reduction in latency for the complete response, if Varnish has to wait
for backend fetches for more than one of the included requests.
......@@ -63,7 +63,7 @@ Backend applications that use ESI includes for standard Varnish can be
expected to work without changes with the VDP, provided that they do
not depend on assumptions about the serialization of ESI subrequests.
Serial ESI requests are processed in a predictable order, one after
the other, but the VDP executes them at roughly the same time. A
the other, but the pesi VDP executes them at roughly the same time. A
backend may conceivably receive a request forwarded for the second
include in a response before the first one. If the logic of ESI
composition in a standard Varnish deployment does not depend on the
......@@ -99,10 +99,10 @@ logic in VCL::
But see below for restrictions on the use of ``pesi.activate()``.
All of the computing resources used by the VDP -- threads, storage,
All of the computing resources used by the pesi VDP -- threads, storage,
workspace, locks, and so on -- can be configured, either with Varnish
runtime parameters or configuration settings made available by the
VDP. And their usage can be monitored with Varnish statistics. So you
pesi VDP. And their usage can be monitored with Varnish statistics. So you
can limit resource usage, and use monitoring tools such as
`varnishstat(1)`_ to ensure efficient parallel ESI processing. For
details see `CONFIGURATION AND MONITORING`_ below.
......@@ -223,9 +223,9 @@ It is strongly recommended to *not* use serial mode from ESI level 0
parallel ESI threads.
Serial mode may sensibly be used to reduce overhead and the number of
threads required without relevant drawbacks:
threads required without relevant drawbacks
* at ESI level > 0
* at ESI level > 0 _and_
* when the VCL author knows that all objects included by the current
request are cacheable, and thus are highly likely to lead to cache
......
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment