Universal Preferences for Template Caches

Preference	Description
Template Cache Path	Enter the directory path to be used to store template files that are cached. Note: You can designate the directory to be used to store cached files in your ngconfig.ini file instead of the Template Cache Path. If you choose that option, do not enter this preference.
Template Server Cache Path	Enter the directory path to be used to store template files that are cached using the Template Cache Generator. CAUTION: You must enter this path to run the Template Cache Generator. If this path is missing, the cache file is created in the Template Cache Path. Note: NextGen Healthcare recommends that you use the Template Server Cache Path if you have a large number of systems running against your database. It reduces the load on the database management system and enables on-demand template caching from Template Editor.

NextGen® Enterprise EHR Template Editor Help 8

Cache Multiple Templates

You can cache all templates or only templates with out-of-date time stamps. You can run the Template Cache Generator from Template Editor or from a standalone executable file. Do one of the following: Double-click TemplateCacheGenerator.exe in your NextGen installation folder. From the Tools menu in Template Editor, select Create Cache > All Templates. The NextGen Template Cache Generator window opens. The Only out of date templates check box is selected by default. A template is out-of-date if the cache time stamp for the template .ngt_file and the cache time stamp in the template database table do not match. To cache all templates regardless of the cache time stamp, clear the check box. Select Cache Templates. The window displays the name of each template being checked and cached. It shows a progress bar and how many of the total number of templates have been cached. To stop caching the remaining templates, select Cancel. The TemplateCacheGenerator window opens. Do one of the followi

NextGen® Enterprise EHR Template Editor Help 8

Cache an Individual Template

To cache a specific template, you must access the Template Cache Generator from Template Editor. Open the template you want to cache. From the Tools menu, select Create Cache, and then select This Template. The NextGen Template Cache Generator window opens. You do not need to enter any information. The template is cached in the Template Server Cache path designated in Templates Preferences in the System Administrator application. Parent topic: Template Caches

NextGen® Enterprise EHR Template Editor Help 8

On-demand Template Caching

You can perform manual template caching if you need to do the following: Cache a selected NextGen® Enterprise EHR to regenerate the cache. A locked-down template cannot be modified and saved, so automatic caching does not take place. Cache all templates when there is a new Template Editor version or patch or NextGen® Enterprise EHR upgrade. You can select options in Template Editor to do the following: Cache an individual template. Cache all templates or only templates with cache time stamps that are not current. The Template Cache Generator is used to process on-demand template caching. Parent topic: Template Caches

NextGen® Enterprise EHR Template Editor Help 8

Accessing the Most Recent Cache File

When a user accesses a template, the system compares the time stamp of the local cache file to the time stamp of the template in the database. If the files are not in sync, the system compares the time stamp of the local cache file to the time stamp in the shared cache directory. If the local cache file is older than the server cache file, the server cache file is written to the local cache directory. If the server cache file is older than the local cache file, the local cache file is written to the local cache directory and pushed up to the shared cache directory. The following diagram depicts this template caching process. Parent topic: Template Caches

NextGen® Enterprise EHR Template Editor Help 8

Template Server Cache Deployment

The following diagram depicts template caching using the Template Server Cache Path preference. Parent topic: Template Caches

NextGen® Enterprise EHR Template Editor Help 8

Template Caches

Caching is a means of providing more efficient retrieval of frequently accessed template-related tables. Caching duplicates the information in a temporary storage area, called a cache, on higher speed media for quicker access. Reading from a cache instead of from the database reduces bandwidth consumption, server load, and data latency (time delays), and avoids round-trip messages to and from the origin server. Template Editor automatically caches a template whenever it is created or modified and saved. Template caching may also be done on demand and at run time. Picklists are cached as they are accessed in the system. Cached files can be stored in a directory designated in your ngconfig.ini file or in the Template Cache Path or Template Server Cache Path in System Administrator Universal Preferences. The Template Server Cache Path works together with the Template Cache Generator. The Template Cache Generator can be run from Template Editor or from a standalone executable file in your

Universal Preferences for Template Caches

Recommendations

Cache Multiple Templates

Cache an Individual Template

On-demand Template Caching

Accessing the Most Recent Cache File

Template Server Cache Deployment

Template Caches

Cache Multiple Templates

Cache an Individual Template

On-demand Template Caching

Accessing the Most Recent Cache File

Template Server Cache Deployment

Template Caches