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Spring Boot Application Architecture | Build a Clean Spring Boot Project Step by Step
Feb 5, 2026
In this video, you’ll learn Spring Boot application architecture in a simple and practical way using a real Spring Boot project. This tutorial is specially designed for anyone who wants to understand how a Spring Boot application is structured in real-world development.
If you’re new to Spring Boot, don’t worry — this video is Spring Boot for beginners and explains each layer clearly, including controller, service, repository, and configuration flow. You’ll also understand the Spring Boot flow architecture, so you know exactly how a request travels from the client to the database and back.
By the end of this video, you’ll be confident in designing clean and scalable Spring Boot application architecture for your own projects. Whether you’re a student, fresher, or working professional, this tutorial will help you build better and more maintainable Spring Boot applications.
📌 What you’ll learn:
Spring Boot project structure explained
Spring Boot flow architecture (request → response)
Best practices for Spring Boot application architecture
How to design a clean Spring Boot project for real-world use
👉 Subscribe for more Spring Boot for beginners tutorials and advanced Java backend content.
#SpringBoot #SpringBootProject #SpringBootForBeginners
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0:02
Hi friends, welcome to tutor funny
0:04
channel. Today I'm going to teach about
0:06
the springboard road map which called as
0:10
springboard layer architecture. Without
0:13
knowing this stuff you cannot work on
0:17
springboard project. This is the very
0:19
important stuff before you are driving
0:21
to the springboard projects as well as a
0:26
springboard application. Okay. So first
0:30
you have to understand how the spring
0:32
boot works. First front end. Front end
0:36
mean everyone can see the front end
0:38
applications. Okay. Uh front end
0:40
application mean uh imagine you have a
0:42
form. The form consist of first name,
0:46
last name, address, phone number. There
0:49
are the those are the fields. It has one
0:52
submit button. After you fill the form,
0:54
you can click submit button. That is a
0:57
front end. Okay. that is known as a
0:59
front end. It send to the data to the
1:02
controller. The send to the data to the
1:04
controller. In between uh these two we
1:08
have a DTO. What is the meaning of DTO?
1:11
It is meaning of the date. Okay. The
1:14
student mean student has a first name,
1:17
last name, phone number and address. So
1:21
those are the entities. Okay. Those are
1:24
the student attributes. Okay. You can
1:26
see that so that attributes or data it
1:28
is passing to the controller. Controller
1:31
is the part which is a main part of the
1:35
framework with handled by the handle by
1:37
control. It is control everything. Okay.
1:40
If if it is a credit application, it
1:42
managed by entire credit application. It
1:45
may be the uh save record or update
1:47
record or view record or delete record.
1:49
All things managed by control. Okay.
1:51
Controller is the part which managed by
1:54
all the operation on the credit
1:56
application. So the controller which
1:59
sent to
2:01
send the record to the service. Okay. In
2:04
between control and service you can see
2:06
there's a interface. Okay. The the
2:09
interface the service mean the service
2:12
consist of interface as well as a
2:13
classes. They both are implemented as a
2:16
service in spring. Okay. So first you
2:20
have keep in your mind front end send
2:22
the data to the controller controller
2:24
passing to the service. Service consist
2:26
of two things interface and
2:28
process. Okay. After the service passing
2:32
the record to the repository repository
2:34
what is the meaning of repository in
2:36
your core Java you will be able to write
2:39
the code uh data based queries select
2:42
all from records. Okay. Those are those
2:44
kind of the things in the framework
2:46
managed by repos. Okay, that repository
2:49
mean base. Okay, the OM based we have to
2:53
return the cooks. Okay, so the very
2:56
simple implementation of this one. Okay,
2:58
you have simply you have to search the
3:00
record, add the record all the things
3:02
you are managed by the repository very
3:03
simply they are implemented by the
3:05
spring book application. Okay. So the
3:07
repository sent to the record to the
3:09
data source data to it may be this uh
3:13
MySQL or postsql or MongoDB those all
3:17
the database can manage the data source.
3:20
Okay this this this how the lay
3:22
architecture works after
3:25
uh after repository send the data to the
3:28
data source it will be saving or update
3:31
or delete the record after done this
3:33
operation it's sent back to the front
3:35
end. Okay, here it is sent back to the
3:37
front end. Okay, it is here this request
3:40
is coming the response is going. Okay,
3:43
send back to the request uh response.
3:46
Okay. When the front end we are uh when
3:48
you enter the form uh submission when
3:51
you click the submit button that there
3:53
there should be a request request are
3:54
coming from via the controller. After
3:56
that after record added to the database
3:59
or fail whatever okay the operation is
4:02
succeed or fail it is sent back to the
4:05
request. So here and front end it show
4:08
if the record is added successfully that
4:10
show the message as a record
4:11
successfully. If there is any getting
4:12
the error the car message has been
4:14
submitted to the front end. This is
4:16
simple implementation of stream code
4:18
application. You have to
4:21
you have to have a good knowledge of
4:24
this. Okay. This things I am going to uh
4:27
do uh I'm going to show the uh practical
4:31
in the spring book open the springbook
4:33
application and how this layer
4:35
architecture work and I'll be showing
4:37
you the simple stuff. Okay let's move
4:39
into the practical part.
4:49
Spring boot application project, right?
4:52
Imagine you have a core Java. How to
4:55
develop in this project? First, you have
4:57
to make the database.
4:59
Make a database.
5:02
Inside the database.
5:06
Inside the database
5:09
maker
5:11
tables.
5:14
The same flow the frame architecture
5:17
also working. First we have to there is
5:20
a file which is a application property.
5:23
Here we have configured the database
5:24
connections. All the database we have
5:27
configured. Right. This all the project
5:29
I will be uh I will doing and
5:32
practically then you will be
5:33
understanding that. Okay. We have
5:35
created the database. What is the
5:36
database you have created here? This a
5:38
database I have created. After that we
5:40
have create the table. We have a one
5:43
package. We have created the entity.
5:45
This is a package. What are the columns
5:48
inside the table. Here we have specify
5:51
the column name. Uh the table name.
5:55
These are the columns.
5:58
Right. First you have to create the
6:00
database and table. After that this
6:04
table whatever the columns are there we
6:07
have to create the separate package DTO.
6:09
So DTO the is same only the the column
6:12
this this is the column name will be
6:14
this this how the database column name
6:16
will be created. This is the front end
6:18
data
6:20
right the front end data the same thing
6:22
we have to create here DTO front id name
6:27
and address and this all things I will
6:29
explain don't worry about that right I
6:30
just you have to understand the flow how
6:32
the flow is working in the spring boot
6:33
application then only you have to easily
6:35
developing and implement the project
6:36
industrial project this is must how to
6:39
implement that step by step so the this
6:41
of the table this is the columns are
6:43
there so this columns this column this
6:46
is a column when the request is coming
6:47
from the front end. These are the
6:48
columns names. It goes to the
6:51
controller. Controller receive the
6:54
request. Get this DTO save DTO. Okay. If
6:56
you update the DTO, update DTO, get the
6:59
DTO, get the different DTO you have to
7:01
create, right? So here we get you just
7:05
understand record is coming via the DTO.
7:08
DTO sending the record to a student
7:10
service mean it's a service. A student
7:13
service service if you have got the
7:16
service this is the interface only the
7:19
implementation is there nothing do
7:22
anything else so the interface passing
7:25
to the service interface passing to the
7:27
class which is a student impl
7:32
into the database so add the records
7:34
into the database we can't directly add
7:37
the data so what we have to connect
7:40
through what the links
7:42
entity entity entity. So here what I did
7:46
here is so here you can see here all
7:48
things are done record is coming v here.
7:51
So DTO we are passing the records after
7:54
that we have to save the record via the
7:57
repo. So we have created a repo. So repo
8:00
how to pass this is the this is our
8:02
entity student entity. Right? So that's
8:05
how we are telling that we are receiving
8:08
the data from the
8:10
uh service. This is a service service
8:14
what I'm doing there is we can't add the
8:16
data direct to the repo. This is a repo.
8:18
What happen is get the this is the DTO.
8:21
DTO we have this is DTO we have set the
8:23
get and get method all the datas. After
8:25
that we are setting to the we have to
8:27
create the object of the entity at
8:30
entity. Entity mean this is a table
8:32
setting values also there it will be
8:34
setting to entity through we have to add
8:37
the records into the database. So this
8:39
is the repo we write the repo. Okay. So
8:42
here entity object we are passing the
8:45
entity object. Student repo means
8:47
student repo. Student repo which is
8:50
communicate the database and add the
8:52
record into the database. That's it.
8:54
After that it will be return it back
8:56
return and it will be record added
8:59
successfully. It goes to the front end.
9:00
This how the works. Record is coming via
9:02
the DTO. DTO passing the controller
9:04
controller passing to the service
9:07
service pass. IMPL passing to the repo
9:11
repo it can't directly pass it create
9:14
the object of the entity student it will
9:17
be passing through via the entity to
9:20
repo at the recording to the database.
9:22
This is this how the flow work you must
9:25
understand before you have to creating
9:28
the project of spring architect layer
9:31
architect. If you understand this one
9:34
well whatever project you can develop
9:37
without any barrier. This is must okay
9:40
you can develop the project without any
9:42
barrier. This is what you you must
9:44
learn. Record is coming when the request
9:47
is coming as front end. front end
9:48
passing the controller controller
9:49
passing to the service service the
9:51
repository repository to the one who
9:52
passing to the record to the data source
9:55
via the entity after that like the
9:58
record is added successfully what happen
10:00
it's it's the the response back to your
10:03
front end right this is how the spring
10:08
layer architecture work I hope you guys
10:11
you understood so far well I'll be see
10:14
you in my next lecture and thank you for
10:16
watching