TileStache.Redis module

Caches tiles to Redis

Requires redis-py and redis-server

https://pypi.python.org/pypi/redis/ http://redis.io/

sudo apt-get install redis-server pip install redis

Example configuration:

“cache”: {

“name”: “Redis”, “host”: “localhost”, “port”: 6379, “db”: 0, “key prefix”: “unique-id”

}

Redis cache parameters:

host

Defaults to “localhost” if omitted.

port

Integer; Defaults to 6379 if omitted.

db

Integer; Redis database number, defaults to 0 if omitted.

key prefix

Optional string to prepend to generated key. Useful when running multiple instances of TileStache that share the same Redis database to avoid key collisions (though the prefered solution is to use a different db number). The key prefix will be prepended to the key name. Defaults to “”.

class TileStache.Redis.Cache(host='localhost', port=6379, db=0, key_prefix='')

lock(layer, coord, format)

Acquire a cache lock for this tile. Returns nothing, but blocks until the lock has been acquired.

read(layer, coord, format)

Read a cached tile.

remove(layer, coord, format)

Remove a cached tile.

save(body, layer, coord, format)

Save a cached tile.

unlock(layer, coord, format)

Release a cache lock for this tile.

TileStache.Redis.tile_key(layer, coord, format, key_prefix)

Return a tile key string.