<h1 id="complex-event-processing">Complex Event Processing<a aria-hidden="true" class="anchor-heading icon-link" href="#complex-event-processing"></a></h1>
<p><em>Event processing</em> involves tracking and processing streams of data about things that happen (ie. events) and deriving a conclusion from them.</p>
<p><em>Complex Event Processing</em> involves gleaning useful information from the event streams as they arrive.</p>
<ul>
<li>the idea is to identify meaningful events
<ul>
<li>here, "meaningful" means as it relates to the business logic of an application</li>
</ul>
</li>
<li>these events may be originating from various layers of an organization, such as sales leads, orders or customer service calls. Or, they may be news items, text messages, social media posts, stock market feeds, traffic reports, weather reports etc.</li>
</ul>
<p>CEP relies on a number of techniques, including:</p>
<ul>
<li>Pattern recognition of the events</li>
<li>Event abstraction</li>
<li>Event filtering</li>
<li>Event aggregation and transformation</li>
<li>Modeling event hierarchies</li>
<li>Detecting relationships (such as causality, membership or timing) between events</li>
<li>Abstracting event-driven processes</li>
</ul>
<h3 id="example-church-monitor">Example: Church Monitor<a aria-hidden="true" class="anchor-heading icon-link" href="#example-church-monitor"></a></h3>
<p>Imagine we have a monitoring system in a church. One day, the system receives the following 3 events at around the same time:</p>
<ol>
<li>church bells ringing.</li>
<li>the appearance of a man in a tuxedo with a woman in a flowing white gown.</li>
<li>rice flying through the air.</li>
</ol>
<p>CEP as a technique helps discover complex events by analyzing and correlating other events</p>
<ul>
<li>From these events the monitoring system may infer a complex event: a wedding</li>
</ul>

Complex Event Processing

tech

This Dendron vault of tech knowledge is organized according to domains and their sub-domains, along with specific implementation of those domains.

For instance, Git itself is a domain. Sub-domains of Git would include topics like `commit`,
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The goal of the wiki is to present data in a manner that is from the perspective
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that have been employed in the past.

This wiki has been written with myself in mind. While learning each of these
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insights as they arose. I have refrained from capturing information that I
considered obvious or otherwise non-beneficial to my own understanding.

As a result, I have allowed myself to use potentially arcane concepts to help
explain others. For example, in my note on [[unit testing|testing.method.unit]],
I have made reference to the [[microservices|general.arch.microservice]] note.
The ability to analogize between different concepts captured in different notes
allows an opportunity to build strong generalized understandings. Given that
you'd have to understand microservices to be able to draw that same parallel
that I've already drawn, these links won't work for everyone. Since these notes
are written for myself, I have been fine with taking these liberties and leaning
on them heavily.

What I hope to gain from this wiki is the ability to step away from any
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vague sounding, and really depends on the domain along with the ends I am
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To achieve this, the system should be steadfast to:
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This Dendron notebook is the sister vault to the general [Second Brain](https://tech.kyletycholiz.com).

## Tags
Throughout the garden, I have made use of tags, which give semantic meaning to the pieces of information.

- `ex.` - Denotes an *example* of the preceding piece of information
- `spec:` - Specifies that the preceding information has some degree of *speculation* to it, and may not be 100% factual. Ideally this gets clarified over time as my understanding develops. I try to go back after I have better understood the topic and clear out the notes of `spec:` tags
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- `mn:` - Denotes a *mnemonic*
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## Resources
### UE (Unexamined) Resources
Often, I come across sources of information that I believe to be high-quality. They may be recommendations or found in some other way. No matter their origin, I may be in a position where I don't have the time to fully examine them (and properly extract notes), or I may not require the information at that moment in time. In cases like these, I will add reference to a section of the note called **UE Resources**. The idea is that in the future when I am ready to examine them, I have a list of resources that I can start with. This is an alternative strategy to compiling browser bookmarks, which I've found can quickly become untenable.

### E (Examined) Resources
Once a resource has been thoroughly examined and has been mined for notes, it will be moved from *UE Resources* to *E Resources*. This is to indicate that (in my own estimation), there is nothing more to be gained from the resource that is not already in the note.

### Resources
This heading is for inexhaustible resources. 
- A prime example would be a quality website that continually posts articles.  - Another example would be a tool, such as software that measures frequencies in a room to help acoustically treat it.
