Conventions used

There are a number of text conventions used throughout this book.

Code in text: Indicates code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles. Here is an example: “This behavior can be configured using the propagation attribute of the @Transactional annotation.”

A block of code is set as follows:

em.getTransaction().begin();
// do your changes
em.getTransaction().commit();

When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:

public int getTeamCount() {
    return jdbcTemplate.queryForObject("SELECT COUNT(*) FROM teams", Integer.class);
}

Any command-line input or output is written as follows:

docker-compose -f docker-compose-redis.yml up

Bold: Indicates a new term, an important word, or words that you see on screen. For example, words in menus or dialog boxes appear in the text like this. Here is an example: “If you run the application now, you’ll see a new queue named match-events-topic.score.dlq.”

Tips or important notes

Appear like this.