Added caching

app/__init__.py

@@ -1,4 +1,17 @@
 from flask import Flask
+from flask_caching import Cache
+
+cache_config = {
+    "CACHE_TYPE": "memcached",
+    "CACHE_DEFAULT_TIMEOUT": 10,
+    "CACHE_MEMCACHED_SERVERS": "cache"
+}
+cache = Cache(config=cache_config)
+
+
+def get_cache(app):
+    cache.init_app(app)
+    return cache
 
 
 def create_app():
@@ -11,3 +24,4 @@ def create_app():
 
 
 app = create_app()
+cache.init_app(app)

app/rodeo/__init__.py

@@ -1,6 +1,8 @@
 """ pointer.rodeo tools
 """
 
+from app import app, get_cache
+
 MAX_PATTERN_SIZE = 20000
 
 CHAR1 = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
@@ -8,6 +10,7 @@ CHAR2 = 'abcdefghijklmnopqrstuvwxyz'
 CHAR3 = '0123456789'
 
 
+@get_cache(app).memoize(50)
 def create_pattern(size):
     pattern = []
 
@@ -30,6 +33,7 @@ def create_pattern(size):
     return ''.join(pattern)
 
 
+@get_cache(app).memoize(50)
 def find_pattern(needle):
     pattern = create_pattern(MAX_PATTERN_SIZE)
     return str(pattern.index(needle))

app/views.py

@@ -2,7 +2,7 @@ from flask import (
     Blueprint, render_template, abort
 )
 
-from app import rodeo
+from app import cache, rodeo
 
 
 POINTER_FORMAT = ('c', 'hex')
@@ -17,7 +17,10 @@ def index():
 
 
 @bp.route('/pat/<int:size>', methods=('GET',))
+@get_cache(app).memoize(50)
 def pattern_create(size):
+    if size > 16384:
+        abort(413)
     pattern = rodeo.create_pattern(size)
     if not pattern:
         abort(411)
@@ -25,6 +28,7 @@ def pattern_create(size):
 
 
 @bp.route('/pat/<pattern>', methods=('POST',))
+@get_cache(app).memoize(50)
 def pattern_offset(pattern):
     if pattern.startswith('0x'):
         pattern = bytes.fromhex(pattern[2:]).decode('utf-8')[::-1]
@@ -34,6 +38,7 @@ def pattern_offset(pattern):
 @bp.route('/ptr', methods=('GET',))
 @bp.route('/ptr/<ord>/<fmt>', methods=('GET',))
 @bp.route('/ptr/<ordr>/rand/<fmt>', methods=('GET',))
+@get_cache(app).memoize(50)
 def pointer_random(ordr='l', fmt='c'):
     if fmt.lower() not in POINTER_FORMAT:
         abort(411)

docker-compose.yml

@@ -6,7 +6,7 @@ services:
     container_name: pointer_rodeo
     restart: unless-stopped
     networks:
-    - proxy
+      - proxy
     labels:
       traefik.enable: true
       traefik.docker.network: proxy
@@ -15,6 +15,12 @@ services:
       traefik.http.routers.pointer_rodeo-http.service: pointer_rodeo
       traefik.http.services.pointer_rodeo.loadbalancer.server.port: 8000
 
+  cache:
+    image: memcached:1.6
+    restart: unless-stopped
+    command:
+      - '-m 32'
+
 networks:
   proxy:
     external: true

poetry.lock

@@ -1,3 +1,11 @@
+[[package]]
+name = "cachelib"
+version = "0.9.0"
+description = "A collection of cache libraries in the same API interface."
+category = "main"
+optional = false
+python-versions = ">=3.7"
+
 [[package]]
 name = "click"
 version = "8.1.3"
@@ -35,6 +43,18 @@ Werkzeug = ">=2.2.2"
 async = ["asgiref (>=3.2)"]
 dotenv = ["python-dotenv"]
 
+[[package]]
+name = "flask-caching"
+version = "2.0.1"
+description = "Adds caching support to Flask applications."
+category = "main"
+optional = false
+python-versions = ">=3.7"
+
+[package.dependencies]
+cachelib = ">=0.9.0"
+Flask = "<3"
+
 [[package]]
 name = "gunicorn"
 version = "20.1.0"
@@ -96,15 +116,17 @@ watchdog = ["watchdog"]
 [metadata]
 lock-version = "1.1"
 python-versions = "^3.10"
-content-hash = "8aae4d25363e5f924eb7bd97e9992c277507ca9b14488ffb73510506a2ee3a54"
+content-hash = "556ffa90cf28c71fa123e73dc06d4e93f9e229c919afe3a94a165da83844520f"
 
 [metadata.files]
+cachelib = []
 click = [
     {file = "click-8.1.3-py3-none-any.whl", hash = "sha256:bb4d8133cb15a609f44e8213d9b391b0809795062913b383c62be0ee95b1db48"},
     {file = "click-8.1.3.tar.gz", hash = "sha256:7682dc8afb30297001674575ea00d1814d808d6a36af415a82bd481d37ba7b8e"},
 ]
 colorama = []
 flask = []
+flask-caching = []
 gunicorn = []
 itsdangerous = [
     {file = "itsdangerous-2.1.2-py3-none-any.whl", hash = "sha256:2c2349112351b88699d8d4b6b075022c0808887cb7ad10069318a8b0bc88db44"},

pyproject.toml

@@ -11,6 +11,7 @@ gunicorn = "^20.1.0"
 Jinja2 = "^3.1.2"
 MarkupSafe = "^2.1.1"
 Werkzeug = "^2.2.2"
+Flask-Caching = "^2.0.1"
 
 [tool.poetry.dev-dependencies]
 

requirements.txt

@@ -1,5 +1,7 @@
+cachelib==0.9.0; python_version >= "3.7"
 click==8.1.3; python_version >= "3.7"
 colorama==0.4.6; python_version >= "3.7" and python_full_version < "3.0.0" and platform_system == "Windows" or platform_system == "Windows" and python_version >= "3.7" and python_full_version >= "3.7.0"
+flask-caching==2.0.1; python_version >= "3.7"
 flask==2.2.2; python_version >= "3.7"
 gunicorn==20.1.0; python_version >= "3.5"
 itsdangerous==2.1.2; python_version >= "3.7"