25 lines
924 B
Rust
25 lines
924 B
Rust
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// Copyright (C) 2024-2026 Whiterun LLC
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//
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// This software is licensed under the GNU Affero General Public License (AGPL), version 3.0 or later.
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// A copy of the license can be found in the LICENSE file or at https://www.gnu.org/licenses/agpl-3.0.html
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use crate::rpc::candlesticks::CandlestickData;
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use moka::future::Cache;
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use std::sync::Arc;
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/// Cache key: (token_display_hex, start_ts, end_ts, stepsize_secs)
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type CandleCacheKey = (String, i64, i64, i64);
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pub type CandlestickCache = Cache<CandleCacheKey, Arc<Vec<CandlestickData>>>;
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/// Max total candles stored across all entries.
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/// Each CandlestickData is ~72 bytes; 500_000 candles ≈ 36 MB upper bound.
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const MAX_CANDLE_CAPACITY: u64 = 500_000;
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pub fn new_candlestick_cache() -> CandlestickCache {
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Cache::builder()
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.max_capacity(MAX_CANDLE_CAPACITY)
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.weigher(|_k, v: &Arc<Vec<CandlestickData>>| v.len().max(1) as u32)
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.build()
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}
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