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1. ã¹ã±ãžã¥ãŒã«ã«ããåŒã³åºã
ããã¯æãäžè¬çã§ç°¡åãªã¢ãããŒãã§ãã宿çãªééã§é¢æ°ãåŒã³åºãã¹ã±ãžã¥ãŒã«ãããã€ãã³ãïŒäŸïŒcronãžã§ããCloudWatchã€ãã³ãïŒãäœæããŸããããã«ããã颿°ã€ã³ã¹ã¿ã³ã¹ãçåãç¶ããå®éã®ãŠãŒã¶ãŒãªã¯ãšã¹ãã«å¿çã§ããç¶æ ãç¶æãããŸãã
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- AWSïŒ CloudWatch EventsïŒçŸEventBridgeïŒã䜿çšããŠãã¹ã±ãžã¥ãŒã«ã«åºã¥ããŠLambda颿°ãããªã¬ãŒã§ããŸãã
- AzureïŒ Azure Timer Triggerã䜿çšããŠãã¹ã±ãžã¥ãŒã«ã«åºã¥ããŠAzure FunctionãåŒã³åºãããšãã§ããŸãã
- Google CloudïŒ Cloud Schedulerã䜿çšããŠãã¹ã±ãžã¥ãŒã«ã«åºã¥ããŠCloud FunctionãåŒã³åºãããšãã§ããŸãã
- Vercel/NetlifyïŒ ãããã®ãã©ãããã©ãŒã ã«ã¯ãçµã¿èŸŒã¿ã®cronãžã§ããã¹ã±ãžã¥ãŒãªã³ã°æ©èœããŸãã¯ãµãŒãããŒãã£ã®ã¹ã±ãžã¥ãŒãªã³ã°ãµãŒãã¹ãšã®çµ±åããã°ãã°ãããŸãã
äŸïŒAWS CloudWatch EventsïŒïŒ
CloudWatch Eventã«ãŒã«ãèšå®ããŠã5åããšã«Lambda颿°ãããªã¬ãŒããããšãã§ããŸããããã«ããã颿°ãã¢ã¯ãã£ããªç¶æ ãç¶æãããªã¯ãšã¹ããåŠçããæºåãæŽããŸãã
# Example CloudWatch Event rule (using AWS CLI)
aws events put-rule --name MyWarmUpRule --schedule-expression 'rate(5 minutes)' --state ENABLED
aws events put-targets --rule MyWarmUpRule --targets '[{"Id":"1","Arn":"arn:aws:lambda:us-east-1:123456789012:function:MyFunction"}]'
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- ãã€ããŒãïŒ ãŠã©ãŒã ã¢ããã®åŒã³åºãã«ã¯ãæå°éã®ãã€ããŒãããŸãã¯å žåçãªãŠãŒã¶ãŒãªã¯ãšã¹ããã·ãã¥ã¬ãŒãããçŸå®çãªãã€ããŒããå«ããããšãã§ããŸããçŸå®çãªãã€ããŒãã䜿çšãããšããŠã©ãŒã ã¢ããäžã«å¿ èŠãªãã¹ãŠã®äŸåé¢ä¿ãèªã¿èŸŒãŸããåæåãããããšãä¿èšŒã§ããŸãã
- ãšã©ãŒãã³ããªã³ã°ïŒ ãŠã©ãŒã ã¢ãã颿°ããµã€ã¬ã³ãã«å€±æããªãããã«ãé©åãªãšã©ãŒãã³ããªã³ã°ãå®è£ ããŠãã ããã颿°ã®ãã°ã§ãšã©ãŒãç£èŠããå¿ èŠã«å¿ããŠä¿®æ£æªçœ®ãè¬ããŠãã ããã
2. åæå®è¡
ã¹ã±ãžã¥ãŒã«ãããåŒã³åºãã ãã«é Œãã®ã§ã¯ãªãã颿°ãè€æ°ã®åæå®è¡ãåŠçã§ããããã«èšå®ããããšãã§ããŸããããã«ããã颿°ã€ã³ã¹ã¿ã³ã¹ãã³ãŒã«ãã¹ã¿ãŒããªãã§åä¿¡ãªã¯ãšã¹ããåŠçã§ããå¯èœæ§ãé«ãŸããŸãã
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ã»ãšãã©ã®ã¯ã©ãŠããããã€ããŒã§ã¯ã颿°ã®æå€§åæå®è¡æ°ãèšå®ã§ããŸãã
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- AzureïŒ Azure Function Appã®æå€§ã€ã³ã¹ã¿ã³ã¹æ°ãèšå®ã§ããŸãã
- Google CloudïŒ Cloud Functionã®æå€§ã€ã³ã¹ã¿ã³ã¹æ°ãèšå®ã§ããŸãã
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- ããŒã¿ããŒã¹æ¥ç¶ïŒ 颿°ãããŒã¿ããŒã¹ãšããåãããå ŽåãããŒã¿ããŒã¹æ¥ç¶ããŒã«ãå¢å ããåæå®è¡æ°ãåŠçã§ããããã«èšå®ãããŠããããšã確èªããŠãã ãããããããªããšãæ¥ç¶ãšã©ãŒãçºçããå¯èœæ§ããããŸãã
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3. ããããžã§ãã³ã°ãããåæå®è¡ïŒAWS LambdaïŒ
AWS Lambdaã¯ãProvisioned ConcurrencyïŒããããžã§ãã³ã°ãããåæå®è¡ïŒããšããæ©èœãæäŸããŠãããæå®ãããæ°ã®é¢æ°ã€ã³ã¹ã¿ã³ã¹ãäºåã«åæåããããšãã§ããŸããããã«ãããã€ã³ã¹ã¿ã³ã¹ãåžžã«ãªã¯ãšã¹ããåŠçããæºåãã§ããŠãããããã³ãŒã«ãã¹ã¿ãŒããå®å šã«æé€ãããŸãã
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# Example AWS CLI command to configure provisioned concurrency
aws lambda put-provisioned-concurrency-config --function-name MyFunction --provisioned-concurrent-executions 5
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4. Keep-Aliveæ¥ç¶
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äŸïŒNode.jsã®`http`ã¢ãžã¥ãŒã«ïŒïŒ
const http = require('http');
const agent = new http.Agent({ keepAlive: true });
function callExternalService() {
return new Promise((resolve, reject) => {
http.get({ hostname: 'example.com', port: 80, path: '/', agent: agent }, (res) => {
let data = '';
res.on('data', (chunk) => {
data += chunk;
});
res.on('end', () => {
resolve(data);
});
}).on('error', (err) => {
reject(err);
});
});
}
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- ã¿ã€ã ã¢ãŠãèšå®ïŒ Keep-Aliveæ¥ç¶ãå€ããªãã®ãé²ãããã«ãé©åãªã¿ã€ã ã¢ãŠãèšå®ãè¡ã£ãŠãã ããã
5. ã³ãŒããšäŸåé¢ä¿ã®æé©å
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äŸïŒNode.jsãšWebpackïŒïŒ
Webpackã䜿çšããŠã³ãŒããšäŸåé¢ä¿ããã³ãã«ããããªãŒã·ã§ã€ãã³ã°ãå®è¡ããŠãããã³ãŒããåé€ããããšãã§ããŸãã
// webpack.config.js
module.exports = {
entry: './src/index.js',
output: {
filename: 'bundle.js',
path: path.resolve(__dirname, 'dist'),
},
mode: 'production',
};
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# Dockerfile
FROM public.ecr.aws/lambda/nodejs:16
COPY package*.json ./
RUN npm install
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CMD ["app.handler"]
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