shared-streets-python-caching.ipynb

{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {},
   "outputs": [],
   "source": [
    "import shutil\n",
    "import time\n",
    "\n",
    "import diskcache as dc\n",
    "import requests\n",
    "\n",
    "DATA_URL_TEMPLATE = 'https://tiles.sharedstreets.io/osm/planet-180312/{z}-{x}-{y}.{layer}.6.pbf'\n",
    "CACHE_PATH = '~/.sharedstreets'"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {},
   "outputs": [],
   "source": [
    "def get_raw_tile(url, cache_path=CACHE_PATH):\n",
    "    with dc.Cache(cache_path) as cache:\n",
    "        key = url.encode('ascii')\n",
    "        tile = cache.get(key)\n",
    "        if not tile:\n",
    "            resp = requests.get(url)\n",
    "            resp.raise_for_status()\n",
    "            tile = resp.content\n",
    "            cache.set(key, tile)\n",
    "        return tile"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "0 655 3.792465925216675\n",
      "0 656 0.3620469570159912\n",
      "0 657 0.9518589973449707\n",
      "0 658 0.8505878448486328\n",
      "0 659 0.48528313636779785\n",
      "1 655 0.009367942810058594\n",
      "1 656 0.0073740482330322266\n",
      "1 657 0.006818056106567383\n",
      "1 658 0.006678104400634766\n",
      "1 659 0.007056236267089844\n"
     ]
    }
   ],
   "source": [
    "shutil.rmtree(CACHE_PATH)\n",
    "\n",
    "for i in range(2):\n",
    "    for x in range(655, 660):\n",
    "        url = DATA_URL_TEMPLATE.format(x=x, y=1583, z=12, layer='geometry')\n",
    "        start = time.time()\n",
    "        get_raw_tile(url)\n",
    "        print(i, x, time.time() - start)"
   ]
  }
 ],
 "metadata": {
  "kernelspec": {
   "display_name": "Python 3",
   "language": "python",
   "name": "python3"
  },
  "language_info": {
   "codemirror_mode": {
    "name": "ipython",
    "version": 3
   },
   "file_extension": ".py",
   "mimetype": "text/x-python",
   "name": "python",
   "nbconvert_exporter": "python",
   "pygments_lexer": "ipython3",
   "version": "3.6.5"
  }
 },
 "nbformat": 4,
 "nbformat_minor": 2
}