Dependency Injection Principles, Practices, and Patterns

8 Object lifetime

In this chapter

• Managing Dependency Lifetime
• Working with disposable Dependencies
• Using Singleton, Transient, and Scoped Lifestyles
• Preventing or fixing bad Lifestyle choices

The passing of time has a profound effect on most food and drink, but the consequences vary. Personally, we find 12-month-old Gruyère more interesting than 6-month-old Gruyère, but Mark prefers his asparagus fresher than either of those.¹  In many cases, it’s easy to assess the proper age of an item; but in certain cases, doing so becomes complex. This is most notable when it comes to wine (see figure 8.1).

¹  Steven, however, doesn’t like asparagus at any age, but does prefer his whiskey of older age.

Wines tend to get better with age — until they suddenly ...