DEV Community: David Romero

Fight the Fire

David Romero — Thu, 09 Jul 2020 05:57:22 +0000

Journal Entry July 8 2020

Study For Java OCA

Today's Topics

Arrays

Different forms of initializing an array

int[] numAnimals;
int [] munAnimals2;
int numAnimals3[];
int numAnimals4 [];

String Array and int array 'a' -> 97

String[] towns = {"Antigua", "Escuintla", "Coban"}
int[] numbers = {100, 2, -9, 'a'};

Serverless Rest API

The service I'm currently working has the following structure:

(Since chalice is a serverless microframework we put libs under chalibelib)

app.py - define the route and the methods, returns a response
validations.py - define the mandatory and non_editable attributes and validate based on requirements
databases.py - dynamoDB table.scan() and table.put_item()
custom_reponses - make the http response based on status code, body and headers

DynamoDB

I'm using DynamoDB as a document database for the moment.

Tables: Collection of data

Items: Group of attributes that is uniquely identifiable.

Attributes: Fundamental data element.

Document Sample, volcanoId is the primary Key

[
  {
    "volcanoID":205,
    "name":"Tajumulco",
    "elevation":4220,
    "coordinates":{
      "N":"15-02-04",
      "W":"91-54-12″
    }, 
    "last_eruption": 1863
  },
  {
    "volcanoID": 206,
    "name": "Tacaná",
    "elevation": 4060,
    "coordinates" : {
    "N": "15.07.48",
    "W": "92.06.45″
    },
    "last_eruption":1986
   }
]

Primary Key: Identifier for the item.

Secondary Indexes: used for queries.

Things to do

Google Ads API
Oauth2.0 authentication on lambdas

Song of the Day

Andy Moor feat. Sue McLaren - Fight The Fire

Clock is ticking

David Romero — Tue, 07 Jul 2020 06:15:03 +0000

Journal Entry July 6 2020

Study For Java OCA

I'm using Jeanne Boyarsky's Book (Certified Associate Java SE 8 Programmer I)

Today's Topics

StringBuilder Class and common methods like

append() insert() delete() deleteCharAt() reverse() toString()

And the concept of mutability and how methods really affect StringBuilder not the case for String

Serverless Rest API, using chalice and boto3

I'm still haven't fully understand the chalice workflow, but when using python I feel so productive and I like that.

Sample of the JSON response

{
    "start_time": "2020-06-26T09:00:00",
    "patient_date": "David",
    "patient_uid": "1234",
    "end_time": "2020-06-26T09:00:00",
    "phone_number": "12345678"
}

AWS Developer Associate Certification 2020

I'm thinking about also getting the AWS Developer Certification, because there are many concepts that I can apply on this project.

I'd tried acloudguru.com recently (1 week free period) and I prefer linuxacademy.com for the amount of Linux and DevOps related courses and labs. The one thing I'm worry about is that the course for maybe outdated, but we will see.

First day and I (almost) miss the deadline of this Journal Experiment. So great start, I guess. Hopefully as the habit settles in I can do it with lees friction. Till tomorrow...

Developer Journal

David Romero — Sun, 05 Jul 2020 05:00:05 +0000

Here we go. Since the start of my developer career I always wanted to keep a daily Journal. A little space to share in a informal manner my conquers and defeats in the software world.

A day goes by, code gets written and deleted, tabs get open and closed, books get read, and somehow I get a feeling I'm not moving forward. Endless procrastination? YouTube dependency? Information OverFlow ? Overthinking ? dunno

The Daily Entry will have (al least) an overview of

Current Project(s) working on
- Feature or Bug
- Code snippets, maybe
- Concepts to learn
Useful links
Ideas for future me
Lessons learned ___

The main idea being, Having to force myself to document my day and review it, also for future references.

Shall we begin...