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Meeting Time and Conference information

Meeting Time:  3rd Monday of each month at 1pm EST as needed (if there are no agenda items, the meeting is cancelled)

EdgeX Working Group 2 is inviting you to a scheduled Zoom meeting.

Topic: EdgeX - Monthly Architects Meeting
Time: Oct 19, 2020 10:00 AM Pacific Time (US and Canada)
Every month on the Third Mon, until Nov 18, 2024, 50 occurrence(s)

Please download and import the following iCalendar (.ics) files to your calendar system.

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Meeting ID: 353 955 907
Passcode: 150365
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Meeting ID: 353 955 907
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Meeting Agenda/Minutes

Sept 21, 2020:  Meeting Minutes; Meeting Recording; Adopter Series Requirements Summary

Aug 20, 2020:  Meeting Minutes; Meeting Recording

July 20, 2020: Meeting Minutes; Meeting Recording

June 30, 2020 (extra meeting to address growing number of issues): Meeting Minutes; Meeting Recording

Tony's slide deck on commit messages

Jun 15, 2020:  Meeting Minutes; Meeting Recording

May 18, 2020:  Meeting Minutes; Meeting Recording (Password: 1k&I$62S)

April 20, 2020: Meeting Minutes; Meeting Recording (Password: 5W?vM=#X)

Mar 16, 2020 (special long session): Meeting Minutes; Trevor Conn's V2 API issue notes; Meeting Recording

Mar 3, 2020: Meeting Minutes; Meeting Recording (API V2 special session)

Feb 18, 2020:  Meeting Minutes; Meeting Recording

Jan 27, 2020:  Meeting Minutes; Meeting Recording

Dec 16:  Meeting Minutes; Meeting Recording

Dec 4: Meeting Minutes; Meeting Recording

Nov 18: Meeting Minutes; Meeting Recording

Open Topics

  • Is the Wiki the best place to document project decisions (those outside of or smaller than ADRs).  This was our initial take.  Should we revisit?
  • New topics from Ireland Planning Meeting
    • Ensure that service location data is pulled from trusted source (i.e. not Consul) (Tony's ADR)

    • V2 API - should we add security foundation added to that (per some of earlier V2 API designs via Dell and Bryon N)?
      • Adding token to authenticate a micro service call (is this in scope for Ireland)
      • May not be needed unless all services are distributed
      • We need to explore alternatives to provide secure / locked out service to service communications
    • Address how to get device resource info (for app services and Kuiper)

      • Probably not ADR worthy

      • Either provide Lenny’s convenience APIs or tool to dig out the device resource information in the (cached) profiles

      • How/when to invalidate the cache if we use the profile-digging approach
    • Naming scheme changes for config.Clients (key name change)
      • Use consistent name that all other services use for core data
      • Consistency in the naming vs changing all the names to use service name as part of key
    • Docker image naming - resolve naming standard we want

      • Drop “go” suffix and “docker” prefix??

    • What version of Alpine for Docker images (make them consistent?)
    • How to handle binary data in V2

      • Is CBOR still the right way?

      • Simplicity versus performance

      • We should have new requirements/use cases to change this

    • Revisit combing core services at least at all executables in one image

      • Release would be easier but image would be bigger with more complex compose files

    • Keep commit history from beginning to end (don’t squash them until PR approved)

    • Standardizing units of measure

    • Digital twin (and LWM2M) applicability

    • Declarative Kong applicability

    • Time series database support and applicability

On Hold Topics or Pending Research

  • How should we apply semantic versioning to modules?  When do we update the minor and major versions of modules?  (comes from the Hanoi planning meetings)
    • Decision was to release (and tag) them with each EdgeX release (major)
    • Enforce backward compatibility within a major release
    • Scope this work for Ireland as it will impact DevOps (Jim to get with Ernesto)
  • How do we review/remove artifact removal (docker images in Docker Hub, snaps, etc.)?
    • Decision made to tag "latest" dot release with X.Y tagging and use X.Y in Docker Compose files (see minutes from 8/20).
    • Open discussion still around what to do with old (very old) images.
      • Let’s check what are other projects doing in this case (Kong, Consul, Vault, …)?
      • Also consult with community and adopters; what do they expect from us? Accenture, ThunderSoft, …

      • Jim to take this research and poll of adopters

      • Adopters have been polled. Most want images available indefinitely.  Tibco suggested keep them one year.
      • Other organizations (Kong, Consul, Vault, etc.) are not removing images regardless of age or circumstances (there are a few exceptions).
  • Is order of event/readings being sent by a single device service important?  Are there async operations in any service that could change the order of events as they are sent from a DS to core to application services (with REST, 0MQ or MQTT infrastructure)?  What do customers desire here?  Is maintained order important?  What is the current state of the system and can we diagram/document that? 
    • Jim to do some research first.  Findings: there are places in DS, Core and Application Services where messages can get out of order.  If order is something that should be an option built in, it will require much work.
    • Adopters have been polled.  Only one organization suggested having the option (but not manditory) would be nice.  Others indicated they understood ramifications (performance hit) and wanted no changes in this regard.

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