Reference library

Database scaling & optimization

Indexing, connection pooling, read replicas, query tuning, and throughput-aware SQL.

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Database scaling & optimization easy

Geo shard by region in Python

Maps users to database shards based on geographic region with a deterministic hash fallback.

sharding geolocation database
Python 
import json
from collections import defaultdict

REGION_SHARD_MAP = {
    "na": ["shard-01", "shard-02"],
    "eu": ["shard-03", "shard-04", "shard-05"],
    "ap": ["shard-06"],
    "sa": ["shard-07", "shard-08"],
}

# user_id -> region (mock lookup)
USER_REGIONS = {
    "u_1001": "na",
    "u_1002": "eu",
    "u_1003…
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