What is OpenID Connect?

Why is Kafka important?

A Spring Boot example using the KafkaListener annotation including annotation properties, KafkaListenerContainerFactory and Default KafkaConsumerFactory explained.

@KafkaListener | Spring Boot Example

I agree that redux was a solution built to solve react issues but conceptually it's just a state management tool which I think can apply to some angular applications. I haven't worked extensively with different angular redux flavors but I have worked a lot with ngrx. I completely agree that it adds an enormous amount of boilerplate code but in certain circumstances that boilerplate becomes a powerful framework of state management. In most applications state can and should be managed in services and alternative persistent storage etc. However in complex applications that rely on pulling from large data sources in real-time and share that data across the application I'd argue that a redux style store is incredibly beneficial. At some point with large applications, storing your state in services just becomes you rewriting the existing functionality of a redux style library. I get that dispatching actions for every little thing can become tedious but I think if you build your store thoughtfully it will benefit you in the end.

Jake Leveroni

Alexander Joseph

A look at the rise of Redux and misconceptions surrounding its need in the Angular world.

Why you should NEVER use Redux with Angular

What is the Log4j2 vulnerability and Spring Boot?

While it's good that $lookup exists in MongoDb, it goes against every reason why you would use MongoDB vs another relational datastore (MySQL).

Remember that a $lookup operation comes with the cost of performing a JOIN operation on your collections. Remember that one of the key advantages of MongoDb is faster performance with unstructured data...the irony...

To further illustrate, let's say you set up a blog using Mongo.  A typical blog comes with Users, Posts, Comments, Likes, Followers, etc.  This is a lot of RELATIONSHIPS to manage.  If you use MongoDb for this use case, you can quickly find yourself in trouble (especially if each entity is represented by it's own collection!)

Let's say you want to display a users most liked blog posts.  This will require one UGLY Mongo aggregation where you aggregate likes, comments, etc for a given post.  That's a lot of $lookups...and starts to beg the question "WHY NOT JUST USE SQL"...

In a nutshell ...ask yourself if you made the right architecture decisions when you find yourself frequently using $lookup...

wow...these examples made $lookup actually make sense.  some of the other stuff out there makes it really hard to understand the simple fact that these are basically "joins" in MongoDb.

Although now I am wondering ..if you are performing these lookups or joins in Mongo, are you really using Mongo as intended?



Steve Jennings

while these examples are great, it's also important to understand performance implications of using $lookup.  Be sure to check out this higher-level take on using $lookup with MongoDB...

https://www.stackchief.com/blog/%24lookup%20in%20MongoDB

stackchief

Tatjana Stankovic

Ammar Sayed

MongoDB $lookup examples including pipeline example, joins, and $lookup with conditions.  Quickly understand $lookup aggregations with these examples and explanations

MongoDB $lookup in 5 Minutes

$lookup Examples | MongoDB

Let’s say your program executes a method. This method creates a “User” object. 

The memory needed to run this method is allocated to stack memory. It’s specific to the method and releases automatically when the method finishes executing. 

The “user object” that gets created is stored in the heap (global) space. References to this object are stored in the stack. 

JavaLava

What is OpenID Connect?

Why is Kafka important?

@KafkaListener | Spring Boot Example

Why you should NEVER use Redux with Angular

What is the Log4j2 vulnerability and Spring Boot?

$lookup Examples | MongoDB

Java Heap vs Stack?

JavaLava

What is OpenID Connect?

Why is Kafka important?

@KafkaListener | Spring Boot Example

Why you should NEVER use Redux with Angular

What is the Log4j2 vulnerability and Spring Boot?

$lookup Examples | MongoDB

Java Heap vs Stack?

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