From cd99584ffa33c95ea9939a99e83f4023a2b643c1 Mon Sep 17 00:00:00 2001
From: Ted Unangst <tedu@tedunangst.com>
Date: Mon, 7 Oct 2019 15:29:34 -0400
Subject: [PATCH] cache users table

---
 database.go | 18 +++++++++++++++---
 web.go      |  1 +
 2 files changed, 16 insertions(+), 3 deletions(-)

diff --git a/database.go b/database.go
index 794727b..a0b3d26 100644
--- a/database.go
+++ b/database.go
@@ -28,14 +28,26 @@ import (
 	"humungus.tedunangst.com/r/webs/login"
 )
 
-func butwhatabout(name string) (*WhatAbout, error) {
+var someusers = cacheNew(cacheOptions { Filler: func(name string) (*WhatAbout, bool) {
 	row := stmtWhatAbout.QueryRow(name)
-	var user WhatAbout
+	user := new (WhatAbout)
 	var options string
 	err := row.Scan(&user.ID, &user.Name, &user.Display, &user.About, &user.Key, &options)
+	if err != nil {
+		return nil, false
+	}
 	user.URL = fmt.Sprintf("https://%s/%s/%s", serverName, userSep, user.Name)
 	user.SkinnyCSS = strings.Contains(options, " skinny ")
-	return &user, err
+	return user, true
+}})
+
+func butwhatabout(name string) (*WhatAbout, error) {
+	var user *WhatAbout
+	ok := someusers.Get(name, &user)
+	if !ok {
+		return nil, fmt.Errorf("no user: %s", name)
+	}
+	return user, nil
 }
 
 func gethonkers(userid int64) []*Honker {
diff --git a/web.go b/web.go
index 06a2910..16ec947 100644
--- a/web.go
+++ b/web.go
@@ -734,6 +734,7 @@ func saveuser(w http.ResponseWriter, r *http.Request) {
 	if err != nil {
 		log.Printf("error bouting what: %s", err)
 	}
+	someusers.Clear(u.Username)
 
 	http.Redirect(w, r, "/account", http.StatusSeeOther)
 }