47 lines
1.5 KiB
Markdown
47 lines
1.5 KiB
Markdown
# Redis State Cache Plan
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## New Redis Keys
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- `ride:{id}:state` (Hash) → status, driver_id, passenger_id, carType, updated_at
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- `ride:{id}:driver` (Hash) → driver_name, car_model, car_plate, rating, phone (cached)
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## Changes Per File
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### acceptRide.php
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After MySQL lock succeeds:
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```php
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$redis->hmset("ride:$rideId:state", [
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'status' => $status,
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'driver_id' => $driverId,
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'passenger_id'=> $passengerIdValue,
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'carType' => $carType,
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'updated_at' => time()
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]);
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$redis->expire("ride:$rideId:state", 86400);
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$redis->hmset("ride:$rideId:driver", $driverInfo);
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$redis->expire("ride:$rideId:driver", 86400);
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$redis->publish("ride:state_changes", json_encode([
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'ride_id' => $rideId, 'status' => 'accepted',
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'driver_id' => $driverId, 'passenger_id' => $passengerIdValue
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]));
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```
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### start_ride.php
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```php
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$redis->hmset("ride:$rideId:state", ['status' => 'Begin', 'updated_at' => time()]);
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$con_ride->prepare("UPDATE ride SET status = ?, rideTimeStart = NOW() WHERE id = ?")->execute([$status, $ride_id]);
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$redis->publish("ride:state_changes", [...]);
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```
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### arrive_ride.php, cancel_ride_*.php
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Same pattern: Redis update first (or after), then MySQL, then Pub/Sub.
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### finish_ride_updates.php
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No change to Redis state (keep MySQL transaction as-is).
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## Socket Server Changes (loction_server/driver_socket.php)
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- Subscribe to Redis `ride:state_changes` channel
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- On message: update in-memory state, emit to passenger room
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- Read from `ride:{id}:state` hash instead of MySQL queries
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