Serve modules through the runtime core with group commits

pure-connections-module offers the document server's HTTP contract with an
aup module: GET is its show message and PUT its edit message. Requests go
through the runtime core as before (work slots, payload budget, ingress,
replies borrowed from the request), and effects are taken on the owner
thread with the core's asynchronous interface.

Each poll round is one burst: every ready request is applied to the app
with deferred saving, one save stores them, and only then are the tickets
completed and answered. A failed save fails the whole burst, reads too. A
key seen again ends the burst first, and the module server accepts every
waiting connection at once so concurrent requests share a burst. On the
Pi's SD card eight clients' 240 edits take 0.59 s instead of 2.14 s.

0 files changed, 0 insertions, 0 deletions