10.2 Issues encountered
During the performance tuning process on the online shop, a number of issues were encountered. The only options available for performance tuning were environmental setup. WebSphere Commerce application modification was not possible because most of the application developers were unavailable, but without significant gains in performance the online shop project was at risk of being cancelled.
In this section we discuss the issues encountered in the order they were discovered and resolved. The following issues were handled:
| 1. | 
|
| DynaCache not enabled |
| 2. |
|
| Inability to cache page fragments |
| 3. |
|
| Cache invalidations causing severe performance impacts |
| 4. |
|
| Cached page size greater than 200Kb |
| 5. |
|
| Large numbers of duplicated similar cache areas |