在PHP项目中对接DeepSeek服务时，响应速度直接影响用户体验和业务流转效率，很多场景下默认的请求配置会导致耗时过高，需要从多个层面进行针对性优化。
优化请求连接方式
默认的curl单次请求每次都会建立新的TCP连接，会增加不必要的握手耗时，建议开启连接复用，同时调整超时参数，避免无效等待。
<?php
// 初始化curl句柄
$ch = curl_init();
// 设置DeepSeek接口地址
curl_setopt($ch, CURLOPT_URL, "https://api.ipipp.com/deepseek/v1/chat/completions");
// 开启连接复用，减少TCP握手耗时
curl_setopt($ch, CURLOPT_FORBID_REUSE, false);
curl_setopt($ch, CURLOPT_TCP_KEEPALIVE, 1);
// 设置超时参数，避免无限等待
curl_setopt($ch, CURLOPT_TIMEOUT, 30); // 总超时30秒
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 5); // 连接超时5秒
// 设置请求头
curl_setopt($ch, CURLOPT_HTTPHEADER, [
"Content-Type: application/json",
"Authorization: Bearer your_deepseek_api_key"
]);
// 请求参数
$postData = [
"model" => "deepseek-chat",
"messages" => [
["role" => "user", "content" => "测试请求内容"]
]
];
curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($postData));
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$response = curl_exec($ch);
curl_close($ch);
?>
使用并发请求处理多任务
如果需要同时发起多个DeepSeek请求，使用curl_multi_exec实现并发，避免串行请求带来的累计耗时。
<?php
// 多个请求的参数配置
$requests = [
[
"url" => "https://api.ipipp.com/deepseek/v1/chat/completions",
"data" => ["model" => "deepseek-chat", "messages" => [["role" => "user", "content" => "请求1内容"]]]
],
[
"url" => "https://api.ipipp.com/deepseek/v1/chat/completions",
"data" => ["model" => "deepseek-chat", "messages" => [["role" => "user", "content" => "请求2内容"]]]
]
];
$mh = curl_multi_init();
$handles = [];
// 初始化所有请求句柄
foreach ($requests as $key => $req) {
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $req["url"]);
curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($req["data"]));
curl_setopt($ch, CURLOPT_HTTPHEADER, [
"Content-Type: application/json",
"Authorization: Bearer your_deepseek_api_key"
]);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_TIMEOUT, 30);
curl_multi_add_handle($mh, $ch);
$handles[$key] = $ch;
}
// 执行并发请求
do {
$status = curl_multi_exec($mh, $active);
if ($active) {
curl_multi_select($mh);
}
} while ($active && $status == CURLM_OK);
// 获取所有响应结果
$results = [];
foreach ($handles as $key => $ch) {
$results[$key] = curl_multi_getcontent($ch);
curl_multi_remove_handle($mh, $ch);
curl_close($ch);
}
curl_multi_close($mh);
?>
添加结果缓存机制
对于重复度高的请求，比如相同的提问内容，可以将DeepSeek的响应结果缓存到Redis或者文件系统中，下次请求直接返回缓存内容，减少接口调用次数。
<?php
// 连接Redis
$redis = new Redis();
$redis->connect("127.0.0.1", 6379);
// 生成请求的唯一缓存键，基于请求参数哈希
$requestData = [
"model" => "deepseek-chat",
"messages" => [["role" => "user", "content" => "重复的提问内容"]]
];
$cacheKey = "deepseek_cache_" . md5(json_encode($requestData));
// 先查缓存
$cachedResult = $redis->get($cacheKey);
if ($cachedResult) {
// 缓存命中直接返回
$response = $cachedResult;
} else {
// 缓存未命中，发起DeepSeek请求
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "https://api.ipipp.com/deepseek/v1/chat/completions");
curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($requestData));
curl_setopt($ch, CURLOPT_HTTPHEADER, [
"Content-Type: application/json",
"Authorization: Bearer your_deepseek_api_key"
]);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_TIMEOUT, 30);
$response = curl_exec($ch);
curl_close($ch);
// 缓存结果，设置1小时过期
$redis->setex($cacheKey, 3600, $response);
}
?>
精简请求参数减少传输量
不必要的请求参数会增加数据传输耗时，建议只传递必须的字段，比如非必要不携带历史上下文，或者压缩上下文内容，减少请求体的大小。
同时可以在请求头中开启Gzip压缩，减少响应数据的传输体积，加快接收速度：
<?php
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "https://api.ipipp.com/deepseek/v1/chat/completions");
// 开启接收Gzip压缩的响应
curl_setopt($ch, CURLOPT_ENCODING, "gzip");
curl_setopt($ch, CURLOPT_HTTPHEADER, [
"Content-Type: application/json",
"Authorization: Bearer your_deepseek_api_key"
]);
// 只传递必要的请求参数，精简messages内容
$postData = [
"model" => "deepseek-chat",
"messages" => [
["role" => "user", "content" => "精简后的提问内容"]
],
"max_tokens" => 200 // 按需设置最大返回token数，避免返回过长内容
];
curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($postData));
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$response = curl_exec($ch);
curl_close($ch);
?>
优化建议总结
- 优先开启curl连接复用，减少TCP握手开销
- 多请求场景下使用并发处理，避免串行等待
- 重复请求添加缓存，降低接口调用频率
- 精简请求参数，开启响应压缩，减少传输耗时
- 合理设置超时参数，避免无效资源占用
PHPDeepSeek响应速度优化curl_multi_exec修改时间：2026-07-10 05:27:28