► |  | Web Server: HTTP Server

1 | Dispatching Server
2 | Dispatchers
3 | Launching Servers
4 | Web Servers
5 | Internal APIs
6 | Troubleshooting and Tips
| Index

▼ | 5 | Internal APIs

5.1 | Timers
5.2 | Connection Manager
5.3 | Serializable Closures
5.4 | Cache Table
5.5 | MIME Types
5.6 | Serialization Utilities
5.7 | URL Param
5.8 | GZip
5.9 | Miscellaneous Utilities

On this page:

make-cache-table
cache-table-lookup!
cache-table-clear!
cache-table?

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#### 5.4`` Cache Table

(require web-server/private/cache-table)
| package: web-server-lib

This module provides a set of caching hash table functions.

> > procedure

> > (make-cache-table) → cache-table?

Constructs a cache-table.

> > procedure

> > (cache-table-lookup! ct id mk) → any/c

> ct : cache-table?
> id : symbol?
> mk : (-> any/c)

Looks up id in ct. If it is not present, then mk is called to construct the value and add it to ct.

> > procedure

> > (cache-table-clear! ct [entry-ids]) → void?

> ct : cache-table?
> entry-ids : (or/c false/c (listof symbol?)) = #f

If entry-ids is #f, clears all entries in ct. Otherwise, clears only the entries with keys in entry-ids.

Changed in version 6.9.0.1 of package web-server-lib: Added optional argument.

> > procedure

> > (cache-table? v) → boolean?

> v : any/c

Determines if v is a cache table.
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