How to update a NoSQL database and publish an event atomically in an event-driven microservice architecture?

In an event-driven microservice architecture, services typically need to update their domain state and publish an integration event on a service bus at the same time (both operations are complete or none). When using a relational database, this is usually done with the help of the send box template: only one entry is saved in the database, which indicates that the event X must be published. This entry is saved as part of the same transaction that contains the domain status changes. A background process then queries these entries and publishes the events. This means that the event will eventually be published, which will make the system consistent.

However, NoSQL databases do not support the idea of ​​updating multiple documents in a single transaction, and many of them do not support it without great solutions. You will find below a list of potential solutions (some more ugly than others):

1. Variation of the model of the shipping box:

Send box template, but instead of having a separate collection of documents for pending events, they will be saved as part of the domain entity. Each domain entity will encapsulate a collection of events that remain to be published and a background process will query these entities and publish the events.

The inconvenients:

  1. If the background process publishes the event but fails to delete it
    from the domain entity, it will republish it. This should not really be a problem if the updates are idempotent or if the event manager is able to identify duplicate events.
  2. Domain entities are
    corrupted with integration events.

2. Event search:

Event search eliminates this problem, but it is very complex to implement and represents a significant cost for small microservices.

The inconvenients:

  1. Complex, may require a complete overhaul of how services work with data.

3. Listen to your own events:

The service will only publish an event to which it is also subscribed (it will not update its status as part of the same operation). When the service bus returns the event for processing, the service updates its domain entity.

The inconvenients:

  1. Other microservices can handle the event before the microservice of origin. This can cause problems if they assume that the event has already occurred while it is not.

Are there other solutions to this problem? What is the best?

Workflow Manager – Unable to update the expired ServiceBus certificate

My servicebus has an expired certificate. I would like to change it.

I tried the following

PS C:  Program Files  Bus Service 1.0> Set-SBCertificate -SBFarmDBConnectionString
& # 39; Data source = MYDBSERVER  MYINSTANCE; Initial Catalog = SbManagementDB; integrat
Security ed = True -FarmCertThumbprint & # 39; dac7fc30d5c534a151d3f21cbdee557ea9abfdfa & # 39;

Set-SBCertificate: Requested certificate with digital imprint
6450F755020335011BC6D6B5522675DCF15EC94A not found in certificate store
LocalMachine  My.

6450F755020335011BC6D6B5522675DCF15EC94A is the imprint of the expired certificate

I have tried to follow this article. But after running certutil -repairstore my "serial number" and get-sbfarm, I get one more time:

get-sbfarm: requested certificate with digital thumbprint
6450F755020335011BC6D6B5522675DCF15EC94A not found in certificate store
LocalMachine  My.
At the line: 1 character: 1
+ get-sbfarm

So, how can I change an expired certificate for ServiceBus?

sharepoint online – Update user profile of another user from SPFx Webpart using REST / JSOM?

Is there a way to update the user profile of another user from the SPFx Web Part? The currently logged in user is the client administrator and / or the SharePoint administrator.

Access is granted to the "SharePoint Online Client Extensibility Web Application Principal" of the Azure AD application with User.ReadWrite.All.

Yet, he throws out Access denied. You are not authorized to perform this action or access this resource. & # 39; The same code works for the currently logged in user.

Below uses the current context of the site

updateSingleUPValue () {
let apiUrl = this.context.pageContext.web.absoluteUrl + "/_api/SP.UserProfiles.PeopleManager/SetSingleValueProfileProperty";

leave userData = {
& # 39; accountName & quot ;: "i: 0 # .f | membership |" + "anotheruser@mytenant.com",
& # 39; propertyName: this.propertyName, // can also be used to set custom single-valued profile properties
& # 39; propertyValue & # 39 ;: this.value
}
let httpClient: SPHttpClient = this.context.spHttpClient;



let spOpts = {
headers: {
& # 39; Accept & quot ;: application / json; odata = nometadata & # 39;
& # 39; Content-type: & # 39; application / json; odata = verbose & # 39;
& # 39; odata-version: & # 39;;
}
body: JSON.stringify (userData)
};

httpClient.post (apiUrl, SPHttpClient.configurations.v1, spOpts) .then (response => {
alert ("update");
});
}

Read in some places that

updateSingleUPValue () {
apiUrl = "https://mytenant-admin.sharepoint.com" + "/_api/SP.UserProfiles.PeopleManager/SetSingleValueProfileProperty";
leave userData = {
& # 39; accountName & quot ;: "i: 0 # .f | membership |" + this.userdetails.loginName,
& # 39; propertyName: this.propertyName, // can also be used to set custom single-valued profile properties
& # 39; propertyValue & # 39 ;: this.value
}
let httpClient: SPHttpClient = this.context.spHttpClient;



let spOpts = {
headers: {
& # 39; Accept & quot ;: application / json; odata = nometadata & # 39;
& # 39; Content-type: & # 39; application / json; odata = verbose & # 39;
& # 39; odata-version: & # 39;;
}
body: JSON.stringify (userData)
};

httpClient.post (apiUrl, SPHttpClient.configurations.v1, spOpts) .then (response => {
alert ("update");
});
}

On the code above first, it automatically tries to get context information – where it fails and gives 403 forbidden

https://mytenant-admin.sharepoint.com/_api/contextinfo 403

No matter what pointer / ideas – The basic idea is to update the user profile properties of another user, all required access can be given.

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So, the paid display is exactly what it is. You pay a freelancer to post content on your forum. It can not make the activity level go on the moon and back, heh I'm not a wizard. What I can promise you is that if you choose to hire me, I will try to do a great job and you will receive beautiful conversations on your forum.

A flawless stay

mysql – according to my last attempt to try to update the customer table from the database 1

I've tried this approach, I seem to miss something
Any advice would be useful.
Thank you in advance.

UPDATE databse2.customers_T
INNER JOIN database1.customers_T
ON database1.customers.customers.id = databse2.customers_T.customers.id
SET databse2.customers_T.customers.id searchkey.id customers.name customers.card
clients.address clients.address2 clients.postal
customers.city customers.region customers.country
customers.firstname customers.email customers.phone
customers.phone2 customers.fax customers.visible
customers.curdate customers.image customers.memodate
= database1.customers_T.customers.id searchkey.id customers.name
customers.card customers.address customers.address2
customers.postal customers.city customers.region
customers.pays customers.firstname clients.email
customers.phone customers.phone2 customers.fax
customers.visible customers.curdate customers.image
ccustomers.memodate

PHP 7 – How to update PHP 7 to Slackware 14.2

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Data structures – Can any one explain the operation of the MO algorithm with the update request?

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Use MathJax to format equations. MathJax reference.

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How to update Dragon naturally? – Everything else

Nuance Dragon Support

Dragon software to speak naturally is a useful package to help you in voice recognition and voice search. Now, if you want to update the software, then you should look at these easy solutions:

· Access the notification in Windows and check for Dragon software updates. Click on it to install these updates.

· If you can not find the updates in the notification section, click the update check button and install them.

· When you install the software, you must click on the installation updates of the box. Then it will be updated whenever an update is available.

Now, if you can not handle these steps and find a difficult situation, then you should call dragon customer support number and get the full support of the expert community with a clear problem-solving approach.

Read more: Nuance Dragon technical support number

lock – How is the table lock applied to update selection queries in postgreSQL?

Is it possible to combine these update queries into postgreSQL?

UPDATE myTable1 SET fld1 = myTable2.value
FROM myTable2
WHERE myTable1.id = myTable2.id AND myTable2.style = 45;
UPDATE myTable1 SET fld2 = myTable2.value
FROM myTable2
WHERE myTable1.id = myTable2.id AND myTable2.style = 46;
UPDATE myTable1 SET fld3 = myTable2.value
FROM myTable2
WHERE myTable1.id = myTable2.id AND myTable2.style = 47;

and how is the lock on these two tables?
Thank you

How to remove a system application from the Play Store Update List

I wonder how I can remove SwiftKey keyboard form the list of updates.

enter the description of the image here

Remarks

  • This is a system application.
  • His deactivate The button is grayed out.