Scalix

This is general short or maybe not description what you can expect from Scalix web applications with next minor update ( lets say 12.8 - but there are not plans to start any other versions).
Current builds for early review you may find at http://downloads.scalix.com/upcoming/
filename will be looks like

scalix-next-GA-enterprise-redhat-suse.bin

So what changed.
1. Tomcat 9 (tomcat 8 is not mainline and may receive only some security fixes), removed unused java libraries, updated all java libraries.
2. #61050 - apply web application setting without restarting tomcat. But please note that not all settings will be reloaded , so for some settings you would need to restart tomcat. Or just wait for some time, for e.g. if you changed settings for IMAP client those settings will be applied only after user session will expire and with next access under that user new imap properties will be in imap session.
3. SWA vertical layout. #61179 vertical message pane in SWA as Office265/Outlook has.

4. #60694 SWA - Replace Javascript alerts with html pop-up dialog s

5. Generic perfermance improvements
- SWA loads 5600 emails in 20seconds.
- ActiveSync - sync to device 1600 appoinments, 53 emails (with meeting request) ~ 3min+. cpu usage average 40-50% max 99-110%.
- Less overloading IMAP . Please note that during synchronizing calendaring via DAV protocol you may see high imap cpu usage it will change as soon as DAV will be stable ...
- Postgresql cpu usage is low during filling massages cache. Before it was not high 50-90% for 3-4 seconds on saving 10k emails(not all email just some parts/data that needed for better performance). Now there are no such thing cpu usage is lower or maybe I was not able to capture it.
- Memory usage you may see free memory (top command) 120Mb(tomcat started) -> 67Mb(after some work). Please note that free memory can increased to initial 120MB after sometime due sessions for users is closing after some time of inactivity to free resources.
Tomcat memory settings is JAVA_OPTS="-server -Xms500m -Xmx500m ..." , using jre 1.8.0_131. And its enough for fill caching 6k emails in Inbox and fill 1.5k appointments.
PLEASE KEEP IN MIND despite lower memory usage it does not mean that you may dramatically decrease memory. To work normally Scalix Web application requires more or less reasonable amount of available memory. You may notice that from release to release web apps works better and may use less memory, but still for big amount of emails web apps requires not very low amount of memory.
- Its not a secret that ICAl (appointment data) is stored in Postgresql for better performance so filling ICAL data for 1.6k appointments took 3-5 seconds (checked with 12.7.1 web DAV it was ~ 13 seconds) and less cpu usage. Generally speaking now this part depends on IMAP performance. From web applications part its fast enough.
6. all web applications will use common jar library to work with XML, ICAL, MAPIXML , VCard... For 3rd party developers or clients who wants to migrate from Scalix may use this library to export Contacts -> VCARD . Or use API to get Contacts as VCARD - this is not new feature in API but now VCARD has more data. Before export scalix contact to VCARD had filled limited amount of fields.

for e.g.

<?xml version="1.0" encoding="UTF-8"?>
<contact>
    <subject>test</subject>
    <direct_ref>0015458b540bcc74</direct_ref>
    <sensitivity>0</sensitivity>
    <message_class>IPM.Contact</message_class>
    <is_recurring>false</is_recurring>
    <reminder_set>false</reminder_set>
    <send_rich_info>false</send_rich_info>
    <display_name_prefix></display_name_prefix>
    <last_name></last_name>
    <email1_address>tesst@tes.com</email1_address>
    <suffix></suffix>
    <display_name></display_name>
    <middle_name></middle_name>
    <email1_address_with_comment>test &lt;tesst@tes.com&gt;</email1_address_with_comment>
    <file_as>test</file_as>
    <first_name>test</first_name>
    <email1_display_name>tesst@tes.com</email1_display_name>
    <last_modification_time>2017-04-05T13:25:02Z</last_modification_time>
    <mapi_charset>UTF8</mapi_charset>
</contact>

  # Distribution List
        BEGIN:VCARD
        VERSION:4.0
        PRODID:-//Scalix Java MapiXml migrator //1.0//EN
        UID:001deb4da95eb1c8
        KIND:group
        EMAIL:sdcasdas <2222@sdasdas.com>
        EMAIL:sdsadas <s12121@asdasdas.com>
        END:VCARD

        #Contact Item with all possible values 
        BEGIN:VCARD
        VERSION:4.0
        PRODID:-//Scalix Java MapiXml migrator //1.0//EN
        UID:001df3c9d9d908b0
        N:last;first;middle;prefix;sufix
        FN:prefix first middle last sufix
        NICKNAME:nickname
        ANNIVERSARY:20180916
        BDAY:20180916
        EMAIL:"email1@site.com" <email1@site.com>
        EMAIL;ALTID=1:"email2@scalix.com" <email2@scalix.com>
        EMAIL;ALTID=2:"email3@scalix.com" <email3@scalix.com>
        ADR;TYPE=work:;;buisness streat;buisness stcity;buisness state;buisness zip
        ;buisness country
        ADR;TYPE=home:;;home street;home city;home state;home zip;home country
        ADR;TYPE=intl:;;other street;other city;other state;other ZIP;other country
        REV:20180910T095135Z
        URL:http:///asdasds.dd
        IMPP:IMadddd
        KIND:individual
        ROLE:profession
        TITLE:job
        ORG:COMPANY;departmen;office???/
        X-MANAGER:Mangers names goe here
        X-ASSISTANT:asssistants names....
        X-SPOUSE:spouse's name
        X-FILE-AS:last, first
        TEL;TYPE=home:home phone
        TEL;TYPE=work:buisness phone
        TEL;TYPE=fax:fax number
        TEL;TYPE=cell:mobile phone
        END:VCARD

    # Simpler contact info
        BEGIN:VCARD
        VERSION:4.0
        PRODID:-//Scalix Java MapiXml migrator //1.0//EN
        UID:0015458b540bcc74
        N:;test;;;
        EMAIL:"tesst@tes.com" <tesst@tes.com>
        REV:20170405T102502Z
        KIND:individual
        X-FILE-AS:test
        END:VCARD

7. DAV is the biggest part of API that was changed.
- Sub folders support.
- Support delegates (if you have calendar from some another scalix user in swa under "Other Users") you will be able to add this Calendar into some Dav client. So DAV now supports other user folders .
- CardDav support. Scalix Contacts will be available via CardDav protocol.
- Currently tested and suppported clients
- Thunderbird + Lightening (https://www.thunderbird.net/en-US/calendar/),
- Thunderbird + CardBook(CardDav client for Thunderbird) (https://addons.thunderbird.net/en-US/thunderbird/addon/cardbook/?src=ss),
- KOrganizer (https://userbase.kde.org/KOrganizer/en),
- Gnome Evolution (https://wiki.gnome.org/Apps/Evolution),
- eM Client (https://www.emclient.com/).
- DavDroid (dav client for Android) (https://www.davdroid.com/)
Shorter version of upcoming DAV support it was rewrriten and now use less cpu usage, less memory and works much more faster.
some stats can be outdated but

Evolution full sync 3 Calendars ~1600+ appointments

started
[25/Oct/2018:06:24:12 -0400] "PROPFIND /api/dav/Principals HTTP/1.1" 401 2763
....

last request

[25/Oct/2018:06:25:25 -0400] "REPORT /api/dav/Calendars/sxadmin-test@user.com/0001201392fc6028/ HTTP/1.1" 207 16865

time spent : 1 minute and 13 seconds (73 seconds)

Please note that 73 seconds its because appointment data (ICAL) was cached , your results may be different due some work (fill cache data , etc)
But in general it fast.

During the day I will provide screenshots how to configure clients and will tell about client restrictions that I found.