[Backend] claimable.service.ts cache key does not include token addre…

backend/src/controllers/stream.controller.ts

@@ -510,6 +510,7 @@ export const getStreamClaimableAmount = async (req: Request, res: Response) => {
       where: { streamId: parsedStreamId },
       select: {
         streamId: true,
+        tokenAddress: true,
         ratePerSecond: true,
         depositedAmount: true,
         withdrawnAmount: true,
@@ -595,6 +596,7 @@ export const getUserStreamSummary = async (
         where: { sender: address },
         select: {
           streamId: true,
+          tokenAddress: true,
           ratePerSecond: true,
           depositedAmount: true,
           withdrawnAmount: true,
@@ -611,6 +613,7 @@ export const getUserStreamSummary = async (
         where: { recipient: address },
         select: {
           streamId: true,
+          tokenAddress: true,
           ratePerSecond: true,
           depositedAmount: true,
           withdrawnAmount: true,

backend/src/routes/v1/streams/withdraw.ts

@@ -69,6 +69,7 @@ export const withdrawHandler = async (req: AuthenticatedRequest, res: Response)
         streamId: true,
         sender: true,
         recipient: true,
+        tokenAddress: true,
         ratePerSecond: true,
         depositedAmount: true,
         withdrawnAmount: true,

backend/src/services/claimable.service.ts

@@ -102,7 +102,7 @@ export class ClaimableAmountService {
         ? Math.floor(requestedAt)
         : Math.floor(this.nowMs() / 1000);
 
-    const cacheKey = `claimable:${stream.streamId}:${getStateFingerprint(stream)}:${calculatedAt}`;
+    const cacheKey = `claimable:${stream.tokenAddress}:${stream.streamId}:${getStateFingerprint(stream)}:${calculatedAt}`;
     const cachedEntry = cache.get<Omit<ClaimableAmountResult, 'cached'>>(cacheKey);
 
     if (cachedEntry) {

backend/tests/claimable.service.test.ts

@@ -4,6 +4,7 @@ import { ClaimableAmountService } from '../src/services/claimable.service.js';
 function makeStreamState(overrides: Partial<Parameters<ClaimableAmountService['getClaimableAmount']>[0]> = {}) {
   return {
     streamId: 1,
+    tokenAddress: 'TEST_TOKEN_ADDRESS',
     ratePerSecond: '10',
     depositedAmount: '100',
     withdrawnAmount: '0',
@@ -247,4 +248,48 @@ describe('ClaimableAmountService', () => {
       expect(cancelRefund + withdrawn + claimable <= deposited, `iteration ${iteration}: cancel settlement exceeded deposit`).toBe(true);
     }
   });
+
+  it('maintains independent cache entries for same streamId across different tokens', () => {
+    vi.setSystemTime(5_000);
+    const service = new ClaimableAmountService({
+      cacheTtlMs: 10_000,
+    });
+
+    // Two streams with the same numeric ID but different token contracts
+    const streamTokenA = makeStreamState({
+      streamId: 42,
+      tokenAddress: 'TOKEN_A',
+      ratePerSecond: '10',
+      depositedAmount: '1000',
+      withdrawnAmount: '0',
+    });
+
+    const streamTokenB = makeStreamState({
+      streamId: 42,
+      tokenAddress: 'TOKEN_B',
+      ratePerSecond: '5',
+      depositedAmount: '2000',
+      withdrawnAmount: '500',
+    });
+
+    const resultA = service.getClaimableAmount(streamTokenA, 100);
+    const resultB = service.getClaimableAmount(streamTokenB, 100);
+
+    // Both should be cache misses (different token = different cache key)
+    expect(resultA.cached).toBe(false);
+    expect(resultB.cached).toBe(false);
+
+    // The values should differ because the streams have different parameters
+    expect(resultA.claimableAmount).not.toBe(resultB.claimableAmount);
+
+    // Second call for Token A should be a cache hit
+    const resultA2 = service.getClaimableAmount(streamTokenA, 100);
+    expect(resultA2.cached).toBe(true);
+    expect(resultA2.claimableAmount).toBe(resultA.claimableAmount);
+
+    // Second call for Token B should also be a cache hit (independent of A)
+    const resultB2 = service.getClaimableAmount(streamTokenB, 100);
+    expect(resultB2.cached).toBe(true);
+    expect(resultB2.claimableAmount).toBe(resultB.claimableAmount);
+  });
 });