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templatePostの結果をキャッシュするようにした
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@Gurrium
Gurrium committed Dec 17, 2023
1 parent ebe2728 commit 7721971
Showing 1 changed file with 117 additions and 96 deletions.
213 changes: 117 additions & 96 deletions webapp/go/app.go
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@@ -1,6 +1,7 @@
package main

import (
"bytes"
crand "crypto/rand"
"crypto/sha512"
"fmt"
Expand Down Expand Up @@ -687,105 +688,124 @@ var templatePostByteArray = [...][]byte{
}

func templatePost(w io.Writer, post Post) {
createdAt := []byte(post.CreatedAt.Format(ISO8601Format))
postID := []byte(strconv.Itoa(post.ID))
userAccountName := []byte(post.User.AccountName)

w.Write(templatePostByteArray[0])
w.Write(postID)
w.Write(templatePostByteArray[1])
w.Write(createdAt)
w.Write(templatePostByteArray[2])
w.Write(userAccountName)
w.Write(templatePostByteArray[3])
w.Write(userAccountName)
w.Write(templatePostByteArray[4])
w.Write(postID)
w.Write(templatePostByteArray[5])
w.Write(createdAt)
w.Write(templatePostByteArray[6])
w.Write([]byte(imageURL(post)))
w.Write(templatePostByteArray[7])
w.Write(userAccountName)
w.Write(templatePostByteArray[8])
w.Write(userAccountName)
w.Write(templatePostByteArray[9])
w.Write([]byte(post.Body))
w.Write(templatePostByteArray[10])
w.Write([]byte(strconv.Itoa(post.CommentCount)))
w.Write(templatePostByteArray[11])

// w.Write([]byte(
// fmt.Sprintf(`
// <div class="isu-post" id="pid_%d" data-created-at="%s">
// <div class="isu-post-header">
// <a href="/@%s" class="isu-post-account-name">%s</a>
// <a href="/posts/%d" class="isu-post-permalink">
// <time class="timeago" datetime="%s"></time>
// </a>
// </div>
// <div class="isu-post-image">
// <img src="%s" class="isu-image">
// </div>
// <div class="isu-post-text">
// <a href="/@%s" class="isu-post-account-name">%s</a>
// %s
// </div>
// <div class="isu-post-comment">
// <div class="isu-post-comment-count">
// comments: <b>%d</b>
// </div>
// `,
// post.ID,
// createdAt,
// post.User.AccountName,
// post.User.AccountName,
// post.ID,
// createdAt,
// imageURL(post),
// post.User.AccountName,
// post.User.AccountName,
// post.Body,
// post.CommentCount,
// ),
// ))

for _, c := range post.Comments {
userAccountName := []byte(c.User.AccountName)

w.Write(templatePostByteArray[12])
w.Write(userAccountName)
w.Write(templatePostByteArray[13])
w.Write(userAccountName)
w.Write(templatePostByteArray[14])
w.Write([]byte(c.Comment))
w.Write(templatePostByteArray[15])
// w.Write([]byte(fmt.Sprintf(`
// <div class="isu-comment">
// <a href="/@%s" class="isu-comment-account-name">%s</a>
// <span class="isu-comment-text">%s</span>
// </div>
cacheKey := []byte(fmt.Sprintf("template_post_%d", post.ID))
buf := bytes.NewBuffer(make([]byte, 0, 850+1024))

cached, err := cache.Get(cacheKey)
if err == nil {
log.Print("cache hit")
w.Write(cached)
return
} else if err == freecache.ErrNotFound {
log.Print("cache miss")
createdAt := []byte(post.CreatedAt.Format(ISO8601Format))
postID := []byte(strconv.Itoa(post.ID))
userAccountName := []byte(post.User.AccountName)

buf.Write(templatePostByteArray[0])
buf.Write(postID)
buf.Write(templatePostByteArray[1])
buf.Write(createdAt)
buf.Write(templatePostByteArray[2])
buf.Write(userAccountName)
buf.Write(templatePostByteArray[3])
buf.Write(userAccountName)
buf.Write(templatePostByteArray[4])
buf.Write(postID)
buf.Write(templatePostByteArray[5])
buf.Write(createdAt)
buf.Write(templatePostByteArray[6])
buf.Write([]byte(imageURL(post)))
buf.Write(templatePostByteArray[7])
buf.Write(userAccountName)
buf.Write(templatePostByteArray[8])
buf.Write(userAccountName)
buf.Write(templatePostByteArray[9])
buf.Write([]byte(post.Body))
buf.Write(templatePostByteArray[10])
buf.Write([]byte(strconv.Itoa(post.CommentCount)))
buf.Write(templatePostByteArray[11])

// w.Write([]byte(
// fmt.Sprintf(`
// <div class="isu-post" id="pid_%d" data-created-at="%s">
// <div class="isu-post-header">
// <a href="/@%s" class="isu-post-account-name">%s</a>
// <a href="/posts/%d" class="isu-post-permalink">
// <time class="timeago" datetime="%s"></time>
// </a>
// </div>
// <div class="isu-post-image">
// <img src="%s" class="isu-image">
// </div>
// <div class="isu-post-text">
// <a href="/@%s" class="isu-post-account-name">%s</a>
// %s
// </div>
// <div class="isu-post-comment">
// <div class="isu-post-comment-count">
// comments: <b>%d</b>
// </div>
// `,
// post.ID,
// createdAt,
// post.User.AccountName,
// post.User.AccountName,
// post.ID,
// createdAt,
// imageURL(post),
// post.User.AccountName,
// post.User.AccountName,
// post.Body,
// post.CommentCount,
// ),
// ))

for _, c := range post.Comments {
userAccountName := []byte(c.User.AccountName)

buf.Write(templatePostByteArray[12])
buf.Write(userAccountName)
buf.Write(templatePostByteArray[13])
buf.Write(userAccountName)
buf.Write(templatePostByteArray[14])
buf.Write([]byte(c.Comment))
buf.Write(templatePostByteArray[15])
// w.Write([]byte(fmt.Sprintf(`
// <div class="isu-comment">
// <a href="/@%s" class="isu-comment-account-name">%s</a>
// <span class="isu-comment-text">%s</span>
// </div>
// `,
// c.User.AccountName,
// c.User.AccountName,
// c.Comment,
// )))
}

buf.Write(templatePostByteArray[16])
buf.Write(postID)
buf.Write(templatePostByteArray[17])
buf.Write([]byte(post.CSRFToken))
buf.Write(templatePostByteArray[18])
// w.Write([]byte(fmt.Sprintf(
// `<div class="isu-comment-form"> <form method="post" action="/comment"> <input type="text" name="comment">
// <input type="hidden" name="post_id" value="%d">
// <input type="hidden" name="csrf_token" value="%s">
// <input type="submit" name="submit" value="submit"> </form> </div> </div> </div>
// `,
// c.User.AccountName,
// c.User.AccountName,
// c.Comment,
// post.ID,
// post.CSRFToken,
// )))
}

w.Write(templatePostByteArray[16])
w.Write(postID)
w.Write(templatePostByteArray[17])
w.Write([]byte(post.CSRFToken))
w.Write(templatePostByteArray[18])
// w.Write([]byte(fmt.Sprintf(
// `<div class="isu-comment-form"> <form method="post" action="/comment"> <input type="text" name="comment">
// <input type="hidden" name="post_id" value="%d">
// <input type="hidden" name="csrf_token" value="%s">
// <input type="submit" name="submit" value="submit"> </form> </div> </div> </div>
// `,
// post.ID,
// post.CSRFToken,
// )))
bytes := buf.Bytes()
w.Write(bytes)
cache.Set(cacheKey, bytes, 10)
return
} else {
log.Print(err)
return
}
}

func getAccountName(w http.ResponseWriter, r *http.Request) {
Expand Down Expand Up @@ -1199,6 +1219,7 @@ func postComment(w http.ResponseWriter, r *http.Request) {
cache.Del([]byte(fmt.Sprintf("comment_count_%d", postID)))
cache.Del([]byte(fmt.Sprintf("comments_%d_%t", postID, true)))
cache.Del([]byte(fmt.Sprintf("comments_%d_%t", postID, false)))
cache.Del([]byte(fmt.Sprintf("template_post_%d", postID)))

flag := 0
err = db.Get(
Expand Down

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