触点数字孪生,揭秘它的独特魅力
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2025-02-20
http {
map $http_x_device_id $backend {
default prod_backend;
"~*^gray" gray_backend;
}
split_clients "${remote_addr}${http_user_agent}" $variant {
10% "v2";
* "v1";
}
server {
location / {
if ($http_x_gray_tag = "true") {
proxy_pass http://$backend;
}
proxy_pass http://$variant;
}
}
}public class DeviceInfoCollector : MonoBehaviour {
void Start() {
var deviceFingerprint = SystemInfo.deviceUniqueIdentifier +
SystemInfo.graphicsDeviceName +
SystemInfo.processorType;
WX.SetStorageSync("device_fp",
MD5Hash(deviceFingerprint));
}
string MD5Hash(string input) {
using (var md5 = System.Security.Cryptography.MD5.Create()) {
byte[] inputBytes = Encoding.ASCII.GetBytes(input);
byte[] hashBytes = md5.ComputeHash(inputBytes);
return BitConverter.ToString(hashBytes).Replace("-","");
}
}
}public class GrayRouteFilter implements GlobalFilter {
@Override
public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
String deviceId = exchange.getRequest().getHeaders().getFirst("X-Device-ID");
int hash = Math.abs(deviceId.hashCode() % 100);
if (hash < grayRate) {
exchange.getAttributes().put(GATEWAY_REQUEST_URL_ATTR,
grayServiceInstance.getUri());
}
return chain.filter(exchange);
}
}# 数据同步中间件
class DataSyncMiddleware:
def __init__(self, old_db, new_db):
self.old_db = old_db
self.new_db = new_db
def write(self, data):
# 异步双写
Thread(target=self.old_db.insert, args=(data,)).start()
Thread(target=self.new_db.insert, args=(data,)).start()
def migrate(self):
# 全量数据迁移
for record in self.old_db.scan():
self.new_db.insert(record)
# MQ增量同步
consumer = KafkaConsumer('db_changes')
for msg in consumer:
self.new_db.insert(msg.value)# metrics_config.yml metrics: - name: game_start_total type: counter labels: [version, platform] help: "Total game starts count" - name: api_latency_seconds type: histogram buckets: [0.1, 0.5, 1, 2, 5] labels: [endpoint] help: "API response latency distribution"
const client = require('prom-client');
const httpRequestDuration = new client.Histogram({
name: 'http_request_duration_seconds',
help: 'HTTP request latency',
labelNames: ['method', 'route'],
buckets: [0.1, 0.3, 0.5, 1, 2, 5]
});
app.use((req, res, next) => {
const end = httpRequestDuration.startTimer();
res.on('finish', () => {
end({ method: req.method, route: req.path });
});
next();
});stages:
- deploy
- monitor
- rollback
deploy_gray:
stage: deploy
script:
- curl -X POST "${GRAY_DEPLOY_URL}?ratio=10"
rules:
- if: '$CI_COMMIT_BRANCH == "feat/gray"'
auto_rollback:
stage: rollback
script:
- ERROR_RATE=$(query_prometheus 'error_rate{env="gray"}')
- if [ $(echo "$ERROR_RATE > 15" | bc) -eq 1 ]; then
curl -X POST "${ROLLBACK_URL}";
fi
needs: ["deploy_gray"]def calculate_ratio(base=5, growth=2, days=5): return [min(base * (growth ** d), 100) for d in range(days)] # 输出:[5, 10, 20, 40, 80]
public boolean isGrayUser(HttpRequest request) {
String deviceId = request.getHeader("X-Device-ID");
String userId = request.getCookie("uid");
String location = request.getHeader("Geo-City");
int hash = (deviceId + userId).hashCode() & 0x7FFFFFFF;
return hash % 100 < grayRatio
&& SUPPORTED_CITIES.contains(location)
&& isHighEndDevice(deviceId);
}const ETCD = require('etcd3');
const client = new ETCD({ hosts: 'etcd-cluster:2379' });
client.watch()
.key('/gray_config')
.create()
.on('data', (res) => {
updateGrayConfig(JSON.parse(res.value.toString()));
});func edgeGrayDecision(ctx context.Context) bool {
deviceInfo := ctx.Value("device_info").(DeviceInfo)
return deviceInfo.Battery > 0.3 &&
deviceInfo.Network == "wifi" &&
deviceInfo.Storage > 1024
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