Mastering Spring WebClient - From Basics to Advanced Techniques
Understand what Spring WebClient is, how to set it up in a Spring Boot application, perform GET and POST requests, handle error handling, retry and backoff on specific exceptions.
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Spring Security - In-Memory Authentication using DaoAuthenticationProvider
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Spring Security- How to implement username and password authentication
Username and password authentication is one of most commonly used methods. Spring security provides API's to configure form-based login, basic authentication and many more with storage options such as JDBC authentication, in-memory authentication as well as custom authentication providers
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Spring Security provides a ready to use framework for authentication as well as authorization. It provides AuthenticationProviders for Username and password and basic authentication, LDAP authentication, JWT authentication and provides apis for building custom AuthenticationProviders
Select values in criteria query - select, multiselect, tuple query
JPA specification provides different ways to select values in criteria query. select, multiselect and tuple queries are used to select single or multiple values from one or more entities
Programmatic Criteria Queries using JPA Criteria API
Criteria Queries in JPA are type-safe and portable way of fetching data. It provides methods such as Criteria Join, Fetch Join, aggregate functions and sub queries to fetch data.
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