flying-hero
96f6318101
新增: - backend/venv/ - Python 虚拟环境 - backend/start.sh - 启动脚本（使用虚拟环境） - backend/requirements.txt - 依赖列表 - .gitignore - 忽略虚拟环境和缓存文件 说明: - 每个项目使用独立虚拟环境 - 避免依赖冲突 - 启动脚本自动创建和激活虚拟环境
31 lines
687 B
JavaScript
31 lines
687 B
JavaScript
var dns = require('dns');
|
|
var retry = require('../lib/retry');
|
|
|
|
function faultTolerantResolve(address, cb) {
|
|
var opts = {
|
|
retries: 2,
|
|
factor: 2,
|
|
minTimeout: 1 * 1000,
|
|
maxTimeout: 2 * 1000,
|
|
randomize: true
|
|
};
|
|
var operation = retry.operation(opts);
|
|
|
|
operation.attempt(function(currentAttempt) {
|
|
dns.resolve(address, function(err, addresses) {
|
|
if (operation.retry(err)) {
|
|
return;
|
|
}
|
|
|
|
cb(operation.mainError(), operation.errors(), addresses);
|
|
});
|
|
});
|
|
}
|
|
|
|
faultTolerantResolve('nodejs.org', function(err, errors, addresses) {
|
|
console.warn('err:');
|
|
console.log(err);
|
|
|
|
console.warn('addresses:');
|
|
console.log(addresses);
|
|
}); |