[Glass] How to start an eval of Gemsatone/S

[Richard Sargent]

On Thu, Jan 20, 2022 at 12:24 AM James Foster via Glass <
glass at lists.gemtalksystems.com> wrote:

> Hi Charles,
>
> In response to your specific question:
>
> 1. To talk to GemStone from Pharo you can use the GCI library (with
> something like SparkleFFI (https://github.com/GemTalk/SparkleFFI) or
> something that talks directly to a Gem that has its own API (such as
> https://github.com/jgfoster/WebGS).
>
> 2. A Gem can be notified if an object changes and then it could notify a
> client. I believe that RemoteServiceReplication (
> https://github.com/GemTalk/RemoteServiceReplication) will (eventually)
> provide synchronization between GemStone and Pharo, but I’m not able to
> answer questions about it. With respect to supporting Web Sockets, WebGS
> (see #1) does have that capability. I’m not aware of any other messaging
> implementations.
>
> 3. As noted by others, GemConnect for Postgres (
> https://github.com/GemTalk/GemConnect-for-Postgres) is available under
> the MIT license.
>
> 4. The performance for MFC has _vastly_ improved. A job that took several
> days can now be done in a few hours with minimal disruption on regular
> operation. It is now very realistic to plan for 24x7 uptime (I understand
> that one customer schedules 1 day per year of downtime for upgrades, etc.).
>
> 5. GemStone runs fine under WSL 2. It runs under WSL 1 but required a
> special keyfile to get around WSL 1 bugs.
>
> 6. For an IDE you can use Topaz (for old-school vim/gdb users), GBS (if
> you have a license for VA or VW), Jadeite (
> https://github.com/GemTalk/Jadeite or its predecessor, Jade (
> https://github.com/jgfoster/Jade)), or experiment with Sparkle (
> https://github.com/GemTalk/Sparkle). To learn more about Sparkle I
> suggest you watch Martin McClure’s upcoming presentation (
> https://www.meetup.com/UKSTUG/events/282299228/).
>

I wouldn't really call Sparkle an IDE (yet). At this point, it is a
debugger and inspector environment. But, it *is* expected to evolve!


> James
>
>
> On Jan 18, 2022, at 7:03 AM, Charles Monteiro via Glass <
> glass at lists.gemtalksystems.com> wrote:
>
> Hi all,
>
> Not sure if this is the right spot to ask,let me know if not, this is more
> of sales evaluation i.e. that’s the intent.
>
> Context:
>
> I wish to evaluate Gemstone/S at first for some more tangential needs that
> are currently targeted for Mongo.
> Our core product actually runs over Oracle and soon over any RDMS but for
> practical purposes we are targetting Postgres.
> However, potentially the bigger need.
>
> From my FPL and Brooklyn Union Gas days I became quite familiar with using
> GemBuilder for VW however instead I want to engage Gemstone from Pharo and
> I understand that not to work the same way.
>
> Recently , (yesterday) I discovered Sparkle which led me to discovering
> SparkleFFI , so there’s apparently some efforts under way to provide comm
> from Pharo to Gemstone i.e. more akin to Gembuilder/VW.
>
> Anyhow, to cut to the chase.
>
> Objectives:
>
> I’m not interested in building a Seaside app that uses Gemstone for its
> persistence.
> Rather, very thin , quite dumb Svelte/JS UIs will talk to Pharo
> microservice(s) which in turn will talk to Gemstone i.e. that’s the hope.
>
> I would prefer some rpc mechanism where transaction boundaries are
> controlled from Pharo but I”ll be happy with whatever mechanism I can use
> to pass objects to Gemstone.
>
> So:
>
>
>    1. How do I talk to Gemstone from Pharo ?
>       1. I believe that Zinc can actually run on Gemstone so json/http(s)
>       would be one way ? Any other way ? best way ?
>    2. Is there a notification / push mechanism now in place e.g. change
>    to a Gemstone collection could be notified to interested parties (Pharo)
>       1. Is there a web socket implementation?
>       2. Any other messaging implementation ? MQTT ? RabbitMQ etc ?
>    3. GemConnect / Postgres , would there be a separate additional
>    license fee ?
>    4. Has the performance of markForCollection changed much in all of
>    these years i.e. does one have to allocate downtime ? i.e. what if the app
>    actually needed to run 24x7, what are the accommodations for said scenario
>    under current Gemstone/S.
>    5. I assume that for development use that one can install Gemstone
>    under WSL ? If so any issues to be aware of ?
>    6. Sparkle is the new IDE ? but I see there’s also IoDE ?
>
>
> Finally , given all of the above , and never mind Gemstone/ S setup itself
> , is there some doc that illustrates a simple hello world scenario where a
> Pharo image is sending to Gemstone objects for persistence ?
> A cursory review of the Glass posts seem Seaside centric.
>
> Thanks in advance,
>
>
>
>
>
> *Charles A. MonteiroChief Technology OfficerDatasoft, Inc*
> *Phone: 347-853-7349*
> *Web:tradeblazer.com <http://www.tradeblazer.com/>*
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>
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