da_deploy
install gc libevent
/deploy/apps
  /my\_app
    date-sha1
      - sv/run
      - sv/log/run
Deploy watch service:
- Every 5 seconds get latest release. "down" previous release services. link to new release.
 - Service da_deploy has to be manually restarted on the server: da_deploy service install da_deploy
 - SSH into server and run "da_deploy service install name of service". Fully automated deploys are hard in case anything goes wrong.