semantic bufo search
find-bufo.com
bufo
refactor(bot): make cooldown tuning configurable via env vars
COOLDOWN_SCALE_FACTOR (default 400) and LENGTH_MULTIPLIER (default 6)
are now env vars so we can tune without redeploying code. also update
dashboard to reflect current multipliers.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
+13
-10
+4
bot/src/config.zig
+4
bot/src/config.zig
···
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7
min_phrase_words: u32,
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8
posting_enabled: bool,
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cooldown_minutes: u32,
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+
cooldown_scale_factor: u32,
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length_multiplier: u32,
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exclude_patterns: []const u8,
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stats_port: u16,
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backend_url: []const u8,
···
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.min_phrase_words = parseU32(getenv("MIN_PHRASE_WORDS"), 3),
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.posting_enabled = parseBool(getenv("POSTING_ENABLED")),
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.cooldown_minutes = parseU32(getenv("COOLDOWN_MINUTES"), 120),
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+
.cooldown_scale_factor = parseU32(getenv("COOLDOWN_SCALE_FACTOR"), 400),
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.length_multiplier = parseU32(getenv("LENGTH_MULTIPLIER"), 6),
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.exclude_patterns = getenv("EXCLUDE_PATTERNS") orelse "what-have-you-done,what-have-i-done,sad,crying,cant-take,knife,what-are-you-doing-with-that,\\brip\\b,fire,ventilator,carnage,riot,grenade,pitchfork,sobbing,breakdown,meltdown,panic,pleading,cry,call-for-help",
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.stats_port = parseU16(getenv("STATS_PORT"), 8080),
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.backend_url = getenv("BACKEND_URL") orelse "https://find-bufo.com",
+7
-8
bot/src/cooldown.zig
+7
-8
bot/src/cooldown.zig
···
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9
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const std = @import("std");
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-
/// Quadratic scale factor for match frequency.
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/// At 5% of matches: ~2x. At 20%: ~17x. At 33%: ~44x.
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const SCALE_FACTOR: f64 = 400.0;
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-
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/// Ratio threshold for the rare-bufo exemption (0.5%).
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const RARE_THRESHOLD: f64 = 0.005;
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13
···
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/// phrase_len: number of words in the bufo's matching phrase
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/// ratio: this bufo's match count / total match count (0.0 to 1.0)
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/// base_secs: base cooldown from config (e.g. 7200 for 120 minutes)
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-
pub fn getCooldownSeconds(phrase_len: u32, ratio: f64, base_secs: u64) u64 {
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/// scale_factor: quadratic frequency scale (e.g. 400)
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/// length_mult_num: numerator for length multiplier (e.g. 6 → 3-word gets 6/3=2x)
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pub fn getCooldownSeconds(phrase_len: u32, ratio: f64, base_secs: u64, scale_factor: u32, length_mult_num: u32) u64 {
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// rare-bufo exemption: specific phrases (4+ words) with negligible match share
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if (phrase_len >= 4 and ratio < RARE_THRESHOLD) return 0;
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// length multiplier: 1-word → 6x, 2-word → 3x, 3-word → 2x, 4+ → 1.5x
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+
// length multiplier: shorter phrases → longer cooldowns
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const clamped: f64 = @floatFromInt(@min(phrase_len, 4));
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-
const length_mult = 6.0 / clamped;
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+
const length_mult = @as(f64, @floatFromInt(length_mult_num)) / clamped;
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// frequency multiplier: quadratic scaling for dominant bufos
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-
const freq_mult = 1.0 + SCALE_FACTOR * ratio * ratio;
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+
const sf: f64 = @floatFromInt(scale_factor);
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const freq_mult = 1.0 + sf * ratio * ratio;
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const base_f: f64 = @floatFromInt(base_secs);
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return @intFromFloat(base_f * length_mult * freq_mult);
+1
-1
bot/src/main.zig
+1
-1
bot/src/main.zig
···
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// per-bufo cooldown (scaled by phrase length + match frequency)
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const base_secs: u64 = @as(u64, state.config.cooldown_minutes) * 60;
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const ratio = state.stats.getMatchRatio(match.name);
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-
const cooldown_secs: i64 = @intCast(cooldown.getCooldownSeconds(match.phrase_len, ratio, base_secs));
165
+
const cooldown_secs: i64 = @intCast(cooldown.getCooldownSeconds(match.phrase_len, ratio, base_secs, state.config.cooldown_scale_factor, state.config.length_multiplier));
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if (state.stats.getLastPosted(match.name)) |last_posted| {
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if (now - last_posted < cooldown_secs) {
+1
-1
bot/src/stats_template.zig
+1
-1
bot/src/stats_template.zig
···
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\\
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\\<div class="strategy">
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\\ <h2 style="margin-top:0">posting strategy</h2>
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\\ <p>shorter phrases get longer cooldowns (1-word: 4x base, 2-word: 2x, 3-word: 1.3x).
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+
\\ <p>shorter phrases get longer cooldowns (1-word: 6x base, 2-word: 3x, 3-word: 2x, 4+: 1.5x).
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\\ rare bufos (4+ words, <0.5% of matches) post immediately. frequent bufos get
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\\ quadratic frequency scaling (a bufo at 20% of matches waits ~17x the base cooldown).</p>
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\\ <div class="strategy-rates" id="strategy-rates"></div>