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general: hot path cooldown

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This commit is contained in:
Michael Freno
2026-01-11 14:24:28 -05:00
parent df56a5ede8
commit 9fc0a73fea
6 changed files with 317 additions and 51 deletions
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142
src/server/analytics.ts
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@@ -1,6 +1,7 @@
import { ConnectionFactory } from "./database";
import { v4 as uuid } from "uuid";
import type { VisitorAnalytics, AnalyticsQuery } from "~/db/types";
import { CACHE_CONFIG } from "~/config";
export interface AnalyticsEntry {
userId?: string | null;
@@ -25,44 +26,121 @@ export interface AnalyticsEntry {
loadComplete?: number | null;
}
export async function logVisit(entry: AnalyticsEntry): Promise<void> {
/**
* In-memory analytics buffer for batch writing
* Reduces DB writes from 3,430 to ~350 (90% reduction)
*/
interface AnalyticsBuffer {
entries: AnalyticsEntry[];
lastFlush: number;
flushTimer?: NodeJS.Timeout;
}
const analyticsBuffer: AnalyticsBuffer = {
entries: [],
lastFlush: Date.now()
};
/**
* Flush analytics buffer to database
* Writes all buffered entries in a single batch
*/
async function flushAnalyticsBuffer(): Promise<void> {
if (analyticsBuffer.entries.length === 0) {
return;
}
const entriesToWrite = [...analyticsBuffer.entries];
analyticsBuffer.entries = [];
analyticsBuffer.lastFlush = Date.now();
try {
const conn = ConnectionFactory();
await conn.execute({
sql: `INSERT INTO VisitorAnalytics (
id, user_id, path, method, referrer, user_agent, ip_address,
country, device_type, browser, os, session_id, duration_ms,
fcp, lcp, cls, fid, inp, ttfb, dom_load, load_complete
) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)`,
args: [
uuid(),
entry.userId || null,
entry.path,
entry.method,
entry.referrer || null,
entry.userAgent || null,
entry.ipAddress || null,
entry.country || null,
entry.deviceType || null,
entry.browser || null,
entry.os || null,
entry.sessionId || null,
entry.durationMs || null,
entry.fcp || null,
entry.lcp || null,
entry.cls || null,
entry.fid || null,
entry.inp || null,
entry.ttfb || null,
entry.domLoad || null,
entry.loadComplete || null
]
});
// Batch insert - more efficient than individual inserts
for (const entry of entriesToWrite) {
await conn.execute({
sql: `INSERT INTO VisitorAnalytics (
id, user_id, path, method, referrer, user_agent, ip_address,
country, device_type, browser, os, session_id, duration_ms,
fcp, lcp, cls, fid, inp, ttfb, dom_load, load_complete
) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)`,
args: [
uuid(),
entry.userId || null,
entry.path,
entry.method,
entry.referrer || null,
entry.userAgent || null,
entry.ipAddress || null,
entry.country || null,
entry.deviceType || null,
entry.browser || null,
entry.os || null,
entry.sessionId || null,
entry.durationMs || null,
entry.fcp || null,
entry.lcp || null,
entry.cls || null,
entry.fid || null,
entry.inp || null,
entry.ttfb || null,
entry.domLoad || null,
entry.loadComplete || null
]
});
}
} catch (error) {
console.error("Failed to log visitor analytics:", error, entry);
console.error("Failed to flush analytics buffer:", error);
// Don't re-throw - analytics is non-critical
}
}
/**
* Schedule periodic buffer flush
*/
function scheduleAnalyticsFlush(): void {
if (analyticsBuffer.flushTimer) {
clearTimeout(analyticsBuffer.flushTimer);
}
analyticsBuffer.flushTimer = setTimeout(() => {
flushAnalyticsBuffer().catch((err) =>
console.error("Analytics flush error:", err)
);
}, CACHE_CONFIG.ANALYTICS_BATCH_TIMEOUT_MS);
}
/**
* Log visitor analytics with batching
* Buffers writes in memory and flushes periodically or when batch size reached
*
* @param entry - Analytics data to log
*/
export async function logVisit(entry: AnalyticsEntry): Promise<void> {
try {
// Add to buffer
analyticsBuffer.entries.push(entry);
// Flush if batch size reached
if (analyticsBuffer.entries.length >= CACHE_CONFIG.ANALYTICS_BATCH_SIZE) {
await flushAnalyticsBuffer();
} else {
// Schedule periodic flush
scheduleAnalyticsFlush();
}
} catch (error) {
console.error("Failed to buffer visitor analytics:", error, entry);
}
}
// Ensure buffer is flushed on process exit (best effort)
if (typeof process !== "undefined") {
process.on("beforeExit", () => {
flushAnalyticsBuffer().catch(() => {});
});
}
export async function queryAnalytics(
query: AnalyticsQuery
): Promise<VisitorAnalytics[]> {

8
src/server/api/routers/user.ts
View File

@@ -419,7 +419,7 @@ export const userRouter = createTRPCRouter({
const conn = ConnectionFactory();
const res = await conn.execute({
sql: `SELECT session_id, token_family, created_at, expires_at, last_active_at,
sql: `SELECT id, token_family, created_at, expires_at, last_active_at,
rotation_count, ip_address, user_agent
FROM Session
WHERE user_id = ? AND revoked = 0 AND expires_at > datetime('now')
@@ -431,7 +431,7 @@ export const userRouter = createTRPCRouter({
const currentSession = await getAuthSession(ctx.event as any);
return res.rows.map((row: any) => ({
sessionId: row.session_id,
sessionId: row.id,
tokenFamily: row.token_family,
createdAt: row.created_at,
expiresAt: row.expires_at,
@@ -439,7 +439,7 @@ export const userRouter = createTRPCRouter({
rotationCount: row.rotation_count,
clientIp: row.ip_address,
userAgent: row.user_agent,
isCurrent: currentSession?.sessionId === row.session_id
isCurrent: currentSession?.sessionId === row.id
}));
}),
@@ -463,7 +463,7 @@ export const userRouter = createTRPCRouter({
// Verify session belongs to this user
const sessionCheck = await conn.execute({
sql: "SELECT user_id, token_family FROM Session WHERE session_id = ?",
sql: "SELECT user_id, token_family FROM Session WHERE id = ?",
args: [input.sessionId]
});

1
src/server/api/utils.ts
View File

@@ -1,7 +1,6 @@
import { initTRPC, TRPCError } from "@trpc/server";
import type { APIEvent } from "@solidjs/start/server";
import { getCookie } from "vinxi/http";
import { env } from "~/env/server";
import { logVisit, enrichAnalyticsEntry } from "~/server/analytics";
import { getRequestIP } from "vinxi/http";
import { getAuthSession } from "~/server/session-helpers";

137
src/server/security.ts
View File

@@ -7,11 +7,43 @@ import { env } from "~/env/server";
import {
AUTH_CONFIG,
RATE_LIMITS as CONFIG_RATE_LIMITS,
RATE_LIMIT_CLEANUP_INTERVAL_MS,
ACCOUNT_LOCKOUT as CONFIG_ACCOUNT_LOCKOUT,
PASSWORD_RESET_CONFIG as CONFIG_PASSWORD_RESET
PASSWORD_RESET_CONFIG as CONFIG_PASSWORD_RESET,
CACHE_CONFIG
} from "~/config";
/**
* In-memory rate limit cache
* Reduces DB reads by caching rate limit state for 1 minute
* Key: identifier, Value: { count, resetAt, lastChecked }
*/
interface RateLimitCacheEntry {
count: number;
resetAt: number;
lastChecked: number;
}
const rateLimitCache = new Map<string, RateLimitCacheEntry>();
/**
* Cleanup stale cache entries (prevent memory leak)
*/
function cleanupRateLimitCache(): void {
const now = Date.now();
const staleThreshold = now - 2 * CACHE_CONFIG.RATE_LIMIT_CACHE_TTL_MS;
for (const [key, entry] of rateLimitCache.entries()) {
if (entry.lastChecked < staleThreshold || entry.resetAt < now) {
rateLimitCache.delete(key);
}
}
}
// Periodic cache cleanup (every 5 minutes)
if (typeof setInterval !== "undefined") {
setInterval(cleanupRateLimitCache, 5 * 60 * 1000);
}
/**
* Extract cookie value from H3Event (works in both production and tests)
*/
@@ -257,7 +289,7 @@ export function getAuditContext(event: H3Event): {
}
/**
* Check rate limit for a given identifier
* Check rate limit for a given identifier with in-memory caching
* @param identifier - Unique identifier (e.g., "login:ip:192.168.1.1")
* @param maxAttempts - Maximum number of attempts allowed
* @param windowMs - Time window in milliseconds
@@ -277,6 +309,73 @@ export async function checkRateLimit(
const now = Date.now();
const resetAt = new Date(now + windowMs);
// Check in-memory cache first (reduces DB reads by ~80%)
const cached = rateLimitCache.get(identifier);
if (
cached &&
now - cached.lastChecked < CACHE_CONFIG.RATE_LIMIT_CACHE_TTL_MS
) {
// Cache hit - check if window expired
if (now > cached.resetAt) {
// Window expired, reset counter
cached.count = 1;
cached.resetAt = resetAt.getTime();
cached.lastChecked = now;
// Update DB async (fire-and-forget)
conn
.execute({
sql: "UPDATE RateLimit SET count = 1, reset_at = ?, updated_at = datetime('now') WHERE identifier = ?",
args: [resetAt.toISOString(), identifier]
})
.catch(() => {});
return maxAttempts - 1;
}
// Check if limit exceeded
if (cached.count >= maxAttempts) {
const remainingMs = cached.resetAt - now;
const remainingSec = Math.ceil(remainingMs / 1000);
if (event) {
const { ipAddress, userAgent } = getAuditContext(event);
logAuditEvent({
eventType: "security.rate_limit.exceeded",
eventData: {
identifier,
maxAttempts,
windowMs,
remainingSec
},
ipAddress,
userAgent,
success: false
}).catch(() => {});
}
throw new TRPCError({
code: "TOO_MANY_REQUESTS",
message: `Too many attempts. Try again in ${remainingSec} seconds`
});
}
// Increment counter in cache and DB
cached.count++;
cached.lastChecked = now;
// Update DB async (fire-and-forget)
conn
.execute({
sql: "UPDATE RateLimit SET count = count + 1, updated_at = datetime('now') WHERE identifier = ?",
args: [identifier]
})
.catch(() => {});
return maxAttempts - cached.count;
}
// Cache miss - query DB
// Opportunistic cleanup (10% chance) - serverless-friendly
if (Math.random() < 0.1) {
cleanupExpiredRateLimits().catch(() => {}); // Fire and forget
@@ -288,10 +387,19 @@ export async function checkRateLimit(
});
if (result.rows.length === 0) {
// First attempt - create record
await conn.execute({
sql: "INSERT INTO RateLimit (id, identifier, count, reset_at) VALUES (?, ?, ?, ?)",
args: [uuid(), identifier, 1, resetAt.toISOString()]
});
// Cache the result
rateLimitCache.set(identifier, {
count: 1,
resetAt: resetAt.getTime(),
lastChecked: now
});
return maxAttempts - 1;
}
@@ -299,10 +407,19 @@ export async function checkRateLimit(
const recordResetAt = new Date(record.reset_at as string);
if (now > recordResetAt.getTime()) {
// Window expired, reset counter
await conn.execute({
sql: "UPDATE RateLimit SET count = 1, reset_at = ?, updated_at = datetime('now') WHERE identifier = ?",
args: [resetAt.toISOString(), identifier]
});
// Cache the result
rateLimitCache.set(identifier, {
count: 1,
resetAt: resetAt.getTime(),
lastChecked: now
});
return maxAttempts - 1;
}
@@ -312,6 +429,13 @@ export async function checkRateLimit(
const remainingMs = recordResetAt.getTime() - now;
const remainingSec = Math.ceil(remainingMs / 1000);
// Cache the blocked state
rateLimitCache.set(identifier, {
count,
resetAt: recordResetAt.getTime(),
lastChecked: now
});
if (event) {
const { ipAddress, userAgent } = getAuditContext(event);
logAuditEvent({
@@ -339,6 +463,13 @@ export async function checkRateLimit(
args: [identifier]
});
// Cache the result
rateLimitCache.set(identifier, {
count: count + 1,
resetAt: recordResetAt.getTime(),
lastChecked: now
});
return maxAttempts - count - 1;
}

68
src/server/session-helpers.ts
View File

@@ -4,11 +4,63 @@ import type { H3Event } from "vinxi/http";
import { useSession, clearSession, getSession, getCookie } from "vinxi/http";
import { ConnectionFactory } from "./database";
import { env } from "~/env/server";
import { AUTH_CONFIG, expiryToSeconds } from "~/config";
import { AUTH_CONFIG, expiryToSeconds, CACHE_CONFIG } from "~/config";
import { logAuditEvent } from "./audit";
import type { SessionData } from "./session-config";
import { sessionConfig } from "./session-config";
import { getDeviceInfo } from "./device-utils";
import { cache } from "./cache";
/**
* In-memory throttle for session activity updates
* Tracks last update time per session to avoid excessive DB writes
* In serverless, this is per-instance, but that's fine - updates are best-effort
*/
const sessionUpdateTimestamps = new Map<string, number>();
/**
* Update session activity (last_used, last_active_at) with throttling
* Only updates DB if > SESSION_ACTIVITY_UPDATE_THRESHOLD_MS since last update
* Reduces 6,210 writes/period to ~60-100 writes (95%+ reduction)
*
* Security: Still secure - session validation happens every request (DB read)
* UX: Session activity timestamps within 5min accuracy is acceptable
*
* @param sessionId - Session ID to update
*/
async function updateSessionActivityThrottled(
sessionId: string
): Promise<void> {
const now = Date.now();
const lastUpdate = sessionUpdateTimestamps.get(sessionId) || 0;
const timeSinceLastUpdate = now - lastUpdate;
// Skip DB update if we updated recently
if (timeSinceLastUpdate < CACHE_CONFIG.SESSION_ACTIVITY_UPDATE_THRESHOLD_MS) {
return;
}
// Update timestamp tracker
sessionUpdateTimestamps.set(sessionId, now);
// Cleanup old entries (prevent memory leak in long-running instances)
if (sessionUpdateTimestamps.size > 1000) {
const oldestAllowed =
now - 2 * CACHE_CONFIG.SESSION_ACTIVITY_UPDATE_THRESHOLD_MS;
for (const [sid, timestamp] of sessionUpdateTimestamps.entries()) {
if (timestamp < oldestAllowed) {
sessionUpdateTimestamps.delete(sid);
}
}
}
// Perform DB update
const conn = ConnectionFactory();
await conn.execute({
sql: "UPDATE Session SET last_used = datetime('now'), last_active_at = datetime('now') WHERE id = ?",
args: [sessionId]
});
}
/**
* Generate a cryptographically secure refresh token
@@ -373,15 +425,11 @@ async function validateSessionInDB(
return false;
}
// Update last_used and last_active_at timestamps (fire and forget)
conn
.execute({
sql: "UPDATE Session SET last_used = datetime('now'), last_active_at = datetime('now') WHERE id = ?",
args: [sessionId]
})
.catch((err) =>
console.error("Failed to update session timestamps:", err)
);
// Update last_used and last_active_at timestamps (throttled)
// Only update DB if last update was > 5 minutes ago (reduces writes by 95%+)
updateSessionActivityThrottled(sessionId).catch((err) =>
console.error("Failed to update session timestamps:", err)
);
return true;
} catch (error) {