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Stable
Activity
0.0
Stable
21
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Monthly Downloads: 16
Programming language: Elixir
License: MIT License
Tags:
Caching
Latest version: v0.0.14-beta.3
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README
GenSpoxy
DEPRECATION WARNING
This package is now deprecated in favor of Shielded Cache. It is no longer being used in production nor is it being maintained.
Package Information
the GenSpoxy
package consist of battle-tested abstractions that help creating in-memory caching
Advantages of GenSpoxy
:
- Makes it very easy to create from scratch highly-concurrent applicative reverse-proxy that holds an internal short-lived (configurable) cache.
- CDN like Origin Shielding - when multiple clients ask for the same request and experience a cache miss, the calculation will be done only once
- Supports non-blocking mode for requests that are willing to receive stale cached data
- Eases the time-to-market of features that require some caching
notes:
- The default cache storage used is
ETS
- The default behaviour is
non-blocking
- Each request should be transformed to a signature deterministically (a.k.a.
req_key
)
usage example:
defmodule SampleCache do
use GenSpoxy.Cache, prerender_module: SamplePrerender
end
defmodule SamplePrerender do
use GenSpoxy.Prerender
@impl true
def do_req(req) do
# slow calculation of `req`
end
@impl true
def calc_req_key(req) do
Enum.join(req, "-")
end
end
# usage
opts = [
table_name: "sample-table",
do_janitor_work: true, # whether we garbage collect expired data
ttl_ms: 5_000 # the data is considered non-stale for 5 seconds
]
# `req` is application dependant
req = %{url: "https://www.very-slow-server.com", platform: "mobile"}
SampleCache.get_or_fetch(req, opts) # blocking manner
SampleCache.async_get_or_fetch(req, opts) # async manner (we're OK with accepting a stale response)