- Efficient Text Highlighter
- Implement the Lightning Algorithm
- Build a markdown notes taking app
- Serve Images in Next-gen Formats
- Package-lock.json Explained
Docker Useful Commands
11/06/2018
This article shows a curated list of docker commands that may be useful.
Overwriting Spring Security Context through Filter
10/30/2018
This article presents a strategy that overwrites the spring security context in order to allow a user to visit the resources without authenticating the user through the authentication filters.
Spring Data MongoDB GridFS 3.4
10/17/2018
This article shows a typical usage of MongoDB GridFS with Spring Data MongoDB. This is for MongoDB java driver v3.4 and Spring Data MongoDB v1.10.x. Note that Spring Data MongoDB v2.X introduces breaking changes with the MongoDB java driver 3.6+. This article only shows the usage of the v3.4 driver with Spring Data MongoDB v1.10.x.
Handle Non-encoded Request URL
10/14/2018
Normally we need to encode the request URL from the client before sending a request to the server, but there may be just one time that you really can't enforce the client to encode their request URL and sometimes it contains special characters that will make the server mark them as illegal characters in the request. This article shows an example of how to use a filter to preprocess the request on the server side.
PostgreSQL and Hibernate CLOB
10/10/2018
When you need a SQL data type that can hold more than 255 characters, you are likely to use some large character data type such as CLOB, BLOB. It is easy to find the right type if you know what exactly the database you will stick to. However, when we use Hibernate, it provides the annotations that support the cross-platform data type translation.
Spring Data Repository Query Precedence Tricks
10/10/2018
Spring Data repository method is very handy but it also comes with its limitation, especially when composed with condition precedence. This article shows one way to work with it and its caveats.
Tomcat Invalid Character in Request
10/10/2018
8.5 Tomcat throws an IllegalArgumentException when processing request URL that has non-encoded illegal special characters. This article shows two workarounds.
Batch Patterns in WebMethods
10/10/2018
Having been working with WebMethods Integration Platform from Software AG for about a year now on a large integration project with many vendor components such as SAP, CityWorks, ArcGIS Server, from knowing nothing about WebMethods to building reliable and robust integration services, following established patterns is inescapable. However, the access to the proprietary software WebMethods and its documentation is limited to the public, we found a hard time to find the best practice for our batch operations. This article shows some patterns we learnt and tested with confidence that you might find helpful in your development with WebMethods.
Entity Graphs for Lazy Loading
10/10/2018
Entity Graphs are templates for persistence query. One common problem it solves is Lazy Loading. This article introduces the basics of Entity Graphs and how to use Entity Graphs with JPA and Spring Data to solve the Lazy Loading.
Entity Mapping with Inheritance in Hibernate
10/10/2018
Inheritance could be enabled in Hibernate with the @MappedSuperclass annotation. This annotation could greatly reduce the boilerplate in our entity mapping.