Add week 8 materials

materials/08-scaling/seminar/simple-sharding/client.py

@@ -0,0 +1,35 @@
+import requests
+
+# put your shards for experiments here
+shards = {
+        'server1': 'http://localhost:8001/',
+        'server2': 'http://localhost:8002/'
+}
+
+keys = [
+    'aasdjkahsdl',
+    'clkjhlkajhsd',
+    'basdjahlkj',
+    'dakjshd',
+]
+
+MAX_HASH = 1000000
+
+def hashf(x: str):
+    # sum of ascii codes
+    return sum([ord(c) for c in x]) % MAX_HASH
+
+def get_shard(k, shards):
+    i = hashf(k) % len(shards)
+    return list(shards)[i]
+
+
+def call_by_key(key):
+    shard = get_shard(key, shards.keys())
+    resp = requests.get(shards[shard])
+    return resp.text
+
+
+if __name__=='__main__':
+    for k in keys:
+        print(call_by_key(k))